Perimeter and Area of 2D Figures

36 soru

Soru 21Soru →

A rectangular community garden is 33 times as long as it is wide. If the total area of the garden is 108108 square feet, what is the perimeter of the garden, in feet?

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Cevap: 4848

Cevap

The perimeter of the garden is 4848 feet.
The correct answer is found by first determining the dimensions of the garden. Since the length is 33 times the width, the area can be represented as (3w)(w)=3w2(3w)(w) = 3w^2. Setting this equal to the given area of 108108 square feet gives 3w2=1083w^2 = 108. Dividing by 33 yields w2=36w^2 = 36, so the width is 66 feet. The length is 3×6=183 \times 6 = 18 feet. The perimeter formula for a rectangle is P=2(length+width)P = 2(length + width). Substituting the dimensions gives P=2(18+6)=2(24)=48P = 2(18 + 6) = 2(24) = 48 feet.

Adım Adım Çözüm

1
Let the width of the garden be ww. The length is 33 times the width, so the length is 3w3w.
Width = ww, Length = 3w3w
Translating the word problem into algebraic expressions allows us to set up an equation.
2
Set up an equation using the formula for the area of a rectangle (Area=length×widthArea = length \times width).
3w×w=1083w \times w = 108
We are given the total area, which links our variable expressions to a known value.
3
Solve the equation for ww.
3w2=108⇒w2=36⇒w=63w^2 = 108 \Rightarrow w^2 = 36 \Rightarrow w = 6
Isolating the variable determines the numerical value for the width.
4
Substitute w=6w = 6 back into the expression for length (3w3w).
Length = 3(6)=183(6) = 18 feet
Both dimensions are needed to calculate the perimeter.
5
Calculate the perimeter using the formula P=2(length+width)P = 2(length + width).
P=2(18+6)=2(24)=48P = 2(18 + 6) = 2(24) = 48 feet
The perimeter represents the total distance around the outside of the rectangular garden.

Anahtar Kavram

Perimeter and Area of 2D Figures
Tahmini Süre:1m 0s
Soru 22Soru →

A piece of wire is bent to form a square with an area of 144144 square centimeters. If the same wire is straightened and then bent to form a rectangle whose length is 44 centimeters longer than its width, what is the area of this new rectangle?

Cevabı ve açıklamayı göster

Cevap: 140140 square centimeters

Cevap

140140 square centimeters
First, find the side length of the square. Since the area is 144144, the side length is 144=12\sqrt{144} = 12. The total length of the wire is the perimeter of the square, which is 12×4=4812 \times 4 = 48. This wire is then used to form a rectangle, so the rectangle's perimeter is also 4848. Let the width of the rectangle be WW. The length is W+4W + 4. The perimeter formula is 2(L+W)=P2(L + W) = P. Substituting the values gives 2(W+W+4)=482(W + W + 4) = 48, which simplifies to 4W+8=484W + 8 = 48. Solving for WW yields 4W=404W = 40, so W=10W = 10. The length is 10+4=1410 + 4 = 14. The area of the new rectangle is 10×14=14010 \times 14 = 140 square centimeters.

Adım Adım Çözüm

1
Calculate the total length of the wire using the square's area.
The side of the square is 144=12\sqrt{144} = 12 cm. The perimeter is 12×4=4812 \times 4 = 48 cm.
The total length of the wire remains constant and equals the perimeter of both shapes.
2
Set up an equation for the rectangle's perimeter.
Let width be WW. Length is W+4W + 4. The perimeter is 2(W+(W+4))=482(W + (W + 4)) = 48.
The rectangle is made from the same wire, so its perimeter is 4848 cm, and its length is 44 cm longer than its width.
3
Solve for the width (WW) and length (LL) of the rectangle.
2(2W+4)=48⇒4W+8=48⇒4W=40⇒W=102(2W + 4) = 48 \Rightarrow 4W + 8 = 48 \Rightarrow 4W = 40 \Rightarrow W = 10 cm. The length is 10+4=1410 + 4 = 14 cm.
Solving the linear equation provides the dimensions needed to find the area.
4
Calculate the area of the rectangle.
Area = 10×14=14010 \times 14 = 140 square centimeters.
The area of a rectangle is its length multiplied by its width.

Anahtar Kavram

Perimeter and Area of 2D Figures
Soru 23Soru →

A kite designer is creating a kite in the shape of a rhombus. The two crossing wooden dowels that form the internal diagonals of the kite measure 1616 inches and 3030 inches. What is the total perimeter of the kite's outer edge, in inches?

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Cevap: 68

Cevap

68
The correct answer is found by recognizing that a rhombus's diagonals bisect each other perpendicularly. This allows the use of the Pythagorean theorem with half-diagonal lengths (88 and 1515) to find a side length of 1717. Multiplying this single side length by the four equal sides of the rhombus yields a total perimeter of 6868 inches.

Adım Adım Çözüm

1
Determine the properties of the diagonals in a rhombus.
The diagonals bisect each other at right angles, forming four identical right triangles.
This breaks down the rhombus into simpler geometric shapes (right triangles), allowing for side length calculation.
2
Calculate the lengths of the legs for one of the right triangles.
The legs are 88 inches (16÷216 \div 2) and 1515 inches (30÷230 \div 2).
The diagonals cut each other exactly in half at the intersection.
3
Use the Pythagorean theorem to find the length of the rhombus's outer edge.
The side length is 82+152=64+225=289=17\sqrt{8^2 + 15^2} = \sqrt{64 + 225} = \sqrt{289} = 17 inches.
The outer edge forms the hypotenuse of the right triangle created by the half-diagonals.
4
Calculate the total perimeter.
17×4=6817 \times 4 = 68 inches.
A rhombus has four equal sides, so the total perimeter is four times the length of one side.

Anahtar Kavram

Perimeter of a Rhombus and Pythagorean Theorem
Soru 24Soru →

A square metal plate has an area of 144144 square inches. A rectangular metal plate is cut so that it has the exact same width as the square plate, but its length is twice the width of the square. What is the perimeter of the rectangular plate in inches?

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Cevap: 72

Cevap

72
The area of the square is 144144 square inches, which means each side of the square is 1212 inches. The new rectangular plate has the same width as the square (1212 inches) and a length that is twice that width (2424 inches). To find the perimeter of the rectangle, add the length and width (12+24=3612 + 24 = 36) and multiply by 22 to account for all four sides, resulting in 7272 inches.

Adım Adım Çözüm

1
Find the side length of the original square metal plate.
Side = 1212 inches.
The area of a square is the side length squared (s2=144s^2 = 144), so the side is the square root of 144144.
2
Determine the dimensions of the rectangular plate.
Width = 1212 inches, Length = 2424 inches.
The problem states the rectangle's width equals the square's side (1212), and its length is twice that amount (2×12=242 \times 12 = 24).
3
Calculate the perimeter of the rectangular plate.
Perimeter = 2×(12+24)=722 \times (12 + 24) = 72 inches.
The perimeter of a rectangle is found by adding the length and width, then multiplying by 22.

Anahtar Kavram

Perimeter and Area of 2D Figures
Soru 25Soru →

A cross-section of an irrigation canal has the shape of an isosceles trapezoid. The flat bottom of the canal is 1010 meters wide, the open water surface at the top is 2020 meters wide, and the vertical depth of the canal is 1212 meters. To prevent seepage, a waterproof lining is applied only to the flat bottom and the two slanted sides of the canal. What is the total length, in meters, of the canal's cross-section that receives this lining?

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Cevap: 36

Cevap

36
The lined portion consists of the flat bottom and the two slanted sides. By dropping perpendicular altitude lines from the top corners to the bottom plane, two identical right triangles are formed on the left and right edges. The horizontal base of each right triangle is half of the difference between the top and bottom widths: (20−10)/2=5(20 - 10) / 2 = 5 meters. The vertical height of the canal is given as 1212 meters. Using the Pythagorean theorem (a2+b2=c2a^2 + b^2 = c^2), the length of each slanted side is 52+122=169=13\sqrt{5^2 + 12^2} = \sqrt{169} = 13 meters. The total length of the waterproof lining is the sum of the bottom width and the two slanted sides: 10+13+13=3610 + 13 + 13 = 36 meters.

Adım Adım Çözüm

1
Calculate the horizontal difference on each side of the trapezoid.
5 meters
To form a right triangle to calculate the slanted side, we must distribute the difference between the top and bottom widths equally to both sides.
2
Apply the Pythagorean theorem to find the length of the slanted sides.
13 meters
Each slanted side acts as the hypotenuse of a right triangle with legs of 5 meters (horizontal) and 12 meters (vertical height).
3
Sum the lengths of the sections that receive the lining.
36 meters
The lining is only applied to the bottom (10 meters) and the two slanted sides (13 meters each). The top is open and excluded.

Anahtar Kavram

Calculating the partial perimeter of a composite/trapezoidal figure using the Pythagorean theorem.
Soru 26Soru →

A city park is shaped like a trapezoid with parallel sides measuring 140140 meters and 100100 meters. The perpendicular distance between these parallel sides is 6060 meters. Inside the park, there is a rectangular concrete plaza that measures 4040 meters by 2525 meters. The rest of the park is covered in grass. What is the total area covered in grass, in square meters?

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Cevap: 6200

Cevap

6200
The total area of the trapezoid is found by multiplying the average of the two bases by the height, resulting in 72007200 square meters. The rectangular plaza has an area of 40×25=100040 \times 25 = 1000 square meters. Subtracting the inner plaza's area from the total area yields 62006200 square meters for the grass.

Adım Adım Çözüm

1
Calculate the total area of the trapezoidal park.
The area of the park is 72007200 square meters.
The formula for the area of a trapezoid is A=12(b1+b2)hA = \frac{1}{2}(b_1 + b_2)h. Substituting the given dimensions yields A=12(140+100)×60=7200A = \frac{1}{2}(140 + 100) \times 60 = 7200.
2
Calculate the area of the rectangular concrete plaza.
The area of the plaza is 10001000 square meters.
The area of a rectangle is length times width. Calculating 40×2540 \times 25 yields 10001000.
3
Subtract the area of the plaza from the total area of the park to find the grass area.
The total area covered in grass is 62006200 square meters.
The grass covers the portion of the park that is not the plaza. Subtracting 10001000 from 72007200 leaves 62006200.

Anahtar Kavram

Calculating and subtracting areas of composite 2D figures
Soru 27Soru →

A circular security zone has a circumference of 16π16\pi meters. What is the area of this zone in square meters?

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Cevap: 64π64\pi

Cevap

64π64\pi
To find the area, the radius of the circle must first be determined using the circumference formula (C=2πrC = 2\pi r). Setting the given circumference equal to the formula (16π=2πr16\pi = 2\pi r) gives a radius of 88 meters. The area is then calculated using the formula A=πr2A = \pi r^2, which results in π(8)2=64π\pi(8)^2 = 64\pi square meters.

Adım Adım Çözüm

1
Identify the formula for circumference to solve for the radius.
C=2πr=16πC = 2\pi r = 16\pi
The radius is required to calculate the area of the circle.
2
Solve for the radius (rr).
r=8r = 8 meters
Dividing both sides of the equation by 2π2\pi isolates the radius.
3
Apply the area formula for a circle using the found radius.
A=πr2=π(8)2=64πA = \pi r^2 = \pi(8)^2 = 64\pi square meters
Substituting the radius (88) into the area formula yields the final required value.

Anahtar Kavram

Calculating the area of a circle by first deriving its radius from a given circumference.
Tahmini Süre:45s
Soru 28Soru →

A municipal park has a flat rectangular section and a semi-circular section attached to one of the rectangle's shorter sides. The overall length of the park, measured from the straight edge of the rectangle to the farthest curved point of the semi-circle, is 200200 meters. The width of the rectangular section is 100100 meters. What is the outer perimeter of the entire park in meters? (Use π≈3.14\pi \approx 3.14)

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Cevap: 557557

Cevap

The outer perimeter of the park is 557557 meters.
The perimeter is the total distance around the outside of the shape. First, find the radius of the semi-circle, which is half of its 100100-meter diameter (5050 m). Subtract this radius from the total 200200-meter length to find the straight edge of the rectangle (150150 m). The outer boundary consists of one 100100-meter straight edge, two 150150-meter straight edges, and the semi-circular arc. The arc length is half the circumference of a full circle (0.5×3.14×100=1570.5 \times 3.14 \times 100 = 157 m). Adding these outer edges together gives 100+150+150+157=557100 + 150 + 150 + 157 = 557 meters.

Adım Adım Çözüm

1
Identify the diameter and radius of the semi-circle.
Diameter = 100100 m, Radius = 5050 m
The semi-circle is attached to the 100100-meter wide side of the rectangle, so its diameter matches that width.
2
Determine the length of the rectangular section's straight sides.
200−50=150200 - 50 = 150 m
The overall length (200200 m) includes both the rectangle's length and the semi-circle's radius (5050 m).
3
Calculate the arc length of the semi-circular section.
12×π×d=0.5×3.14×100=157\frac{1}{2} \times \pi \times d = 0.5 \times 3.14 \times 100 = 157 m
The outer curved edge is exactly half of a full circle's circumference.
4
Sum the lengths of all outer boundary segments.
100+150+150+157=557100 + 150 + 150 + 157 = 557 m
The total perimeter includes one short straight edge (100100 m), two long straight edges (150150 m each), and the curved arc (157157 m). The internal dashed line is not part of the outer perimeter.

Anahtar Kavram

Calculating unknown dimensions and outer perimeters of composite figures.
Tahmini Süre:1m 0s
Soru 29Soru →

A trapezoidal wooden sign has a height of 1818 inches. Its parallel top and bottom edges measure 2424 inches and 3636 inches, respectively. If a rectangular hole measuring 88 inches by 66 inches is cut out of the sign to mount a digital clock, what is the area of the remaining wooden surface in square inches?

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Cevap: 492

Cevap

492
The remaining area is found by subtracting the area of the inner rectangle from the area of the outer trapezoid. The trapezoid area is 12(24+36)×18=540\frac{1}{2}(24 + 36) \times 18 = 540. The rectangle area is 8×6=488 \times 6 = 48. The difference is 540−48=492540 - 48 = 492.

Adım Adım Çözüm

1
Calculate the area of the full trapezoidal sign.
540 square inches
This gives the total area before the hole is cut, using the formula 0.5 * (base1 + base2) * height.
2
Calculate the area of the rectangular cutout.
48 square inches
This represents the area that is removed from the sign, calculated as length * width.
3
Subtract the cutout area from the total area.
492 square inches
Subtracting the removed area from the initial total area gives the area of the remaining solid surface.

Anahtar Kavram

Area of composite 2D figures involving trapezoids and rectangles.
Tahmini Süre:1m 0s
Soru 30Soru →

A circular fountain has a diameter of 1212 meters and is surrounded by a paved walkway that is 33 meters wide. Which of the following represents the area of the walkway in square meters?

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Cevap: 45π45\pi

Cevap

The correct answer is 45π45\pi.
The correct answer is found by subtracting the area of the inner circle from the area of the larger outer circle. The inner radius is 66 meters (half of the 1212-meter diameter), giving an area of 36π36\pi. The outer radius is 99 meters (66 meters plus the 33-meter walkway), giving a total area of 81π81\pi. The difference is 81π−36π=45π81\pi - 36\pi = 45\pi.

Adım Adım Çözüm

1
Find the radius of the inner fountain.
12÷2=612 \div 2 = 6 meters.
The area formula for a circle requires the radius, which is half of the diameter.
2
Calculate the area of the fountain.
Area = π×62=36π\pi \times 6^2 = 36\pi square meters.
This establishes the area of the space not covered by the walkway.
3
Find the radius of the total circular area (fountain plus walkway).
6+3=96 + 3 = 9 meters.
The walkway adds 33 meters to the radius of the inner circle.
4
Calculate the total area.
Area = π×92=81π\pi \times 9^2 = 81\pi square meters.
This gives the combined area of both the fountain and the walkway.
5
Subtract the fountain's area from the total area.
81π−36π=45π81\pi - 36\pi = 45\pi square meters.
Subtracting the inner area isolates the area of just the paved walkway.

Anahtar Kavram

To find the area of a ring (annulus), calculate the area of the outer circle and subtract the area of the inner circle.
Soru 31Soru →

A rectangular landing pad is designed so that its length is exactly three times its width. If the total area of the landing pad is 147147 square meters, what is the perimeter of the landing pad in meters?

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Cevap: 56

Cevap

56
By setting the width as ww and length as 3w3w, the area equation is 3w2=1473w^2 = 147. Solving for ww yields a width of 77 meters, making the length 2121 meters. The perimeter is the sum of all four sides: 2(21+7)=562(21 + 7) = 56 meters.

Adım Adım Çözüm

1
Define variables and set up the area equation.
w×3w=147w \times 3w = 147
The area of a rectangle is width times length, and the length is given as three times the width.
2
Solve for the width (ww).
w2=49⇒w=7w^2 = 49 \Rightarrow w = 7
Dividing both sides by 33 isolates w2w^2, and taking the square root gives the width.
3
Calculate the length and the perimeter.
Length = 2121, Perimeter = 5656
Length is 3×73 \times 7. Perimeter is 2(21+7)2(21 + 7).

Anahtar Kavram

Calculating the perimeter of a rectangle when given its area and the proportional relationship between its sides.
Soru 32Soru →

A canvas tarp is cut into the shape of a right triangle. The area of the tarp is 6060 square feet, and its shortest leg measures 88 feet. What is the perimeter of the tarp in feet?

Cevabı ve açıklamayı göster

Cevap: 4040

Cevap

4040
To find the perimeter, all three sides of the right triangle are needed. Using the given area (6060) and shortest leg (88), the length of the other leg is found with the area formula A=12bhA = \frac{1}{2}bh, yielding 1515 feet. Next, the Pythagorean theorem (82+152=c28^2 + 15^2 = c^2) reveals the hypotenuse is 1717 feet. Summing the three sides (8+15+178 + 15 + 17) gives the correct perimeter of 4040 feet.

Adım Adım Çözüm

1
Find the length of the other leg using the area formula for a triangle, A=12bhA = \frac{1}{2}bh.
60=12(8)b⇒60=4b⇒b=1560 = \frac{1}{2}(8)b \Rightarrow 60 = 4b \Rightarrow b = 15 feet.
The perimeter requires all three side lengths, so the missing leg must be calculated first.
2
Use the Pythagorean theorem (a2+b2=c2a^2 + b^2 = c^2) to find the hypotenuse.
82+152=c2⇒64+225=c2⇒289=c2⇒c=178^2 + 15^2 = c^2 \Rightarrow 64 + 225 = c^2 \Rightarrow 289 = c^2 \Rightarrow c = 17 feet.
The hypotenuse is the third side needed to find the complete outer boundary of the right triangle.
3
Calculate the perimeter by summing the three side lengths.
P=8+15+17=40P = 8 + 15 + 17 = 40 feet.
The perimeter of any polygon is the total length of its outer boundary.

Anahtar Kavram

Calculating missing dimensions of a right triangle using area and the Pythagorean theorem to find the perimeter.
Tahmini Süre:1m 0s
Soru 33Soru →

A rectangular garden has a perimeter of 5656 meters. The length of the garden is 44 meters greater than its width. If a 33-meter wide paved path is built entirely inside the garden along all four of its borders, what is the area, in square meters, of the remaining unpaved section of the garden?

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Cevap: 60

Cevap

The area of the remaining unpaved section of the garden is 60 square meters.
The original dimensions of the garden are found to be 12 meters and 16 meters based on the given perimeter and side relationships. The inner unpaved section has dimensions of 12 - 6 = 6 meters and 16 - 6 = 10 meters because the 3-meter path cuts into both sides of each dimension. Multiplying these inner dimensions yields a final area of 60 square meters.

Adım Adım Çözüm

1
Use the perimeter formula to find the outer length and width of the garden.
Width = 12 meters, Length = 16 meters.
The relationship between length and width (L = W + 4) and the total perimeter formula 2L+2W=562L + 2W = 56 allows us to find the exact dimensions.
2
Calculate the dimensions of the inner unpaved area by subtracting the path's width.
Inner width = 6 meters, Inner length = 10 meters.
The 3-meter path runs along all four borders, meaning the path's width must be subtracted twice (3 + 3 = 6 meters) from both the outer length and the outer width.
3
Calculate the final area of the inner unpaved section.
60 square meters.
The area of a rectangle is found by multiplying its length by its width (10×610 \times 6).

Anahtar Kavram

Solving for unknown dimensions using perimeter, and determining the area of a smaller inscribed rectangle by correctly subtracting border widths.
Soru 34Soru →

A rectangular swimming pool is twice as long as it is wide. It is surrounded by a tiled deck that has a uniform width of 22 meters. If the area of the deck alone is 136136 square meters, what is the perimeter of the swimming pool in meters?

Cevabı ve açıklamayı göster

Cevap: 60

Cevap

60
The correct answer accurately models the outer dimensions of the pool plus deck as (w+4)(w + 4) and (2w+4)(2w + 4). Subtracting the inner pool area (2w2)(2w^2) leaves the deck area equation 12w+16=13612w + 16 = 136. Solving this yields a width of 1010 meters and a length of 2020 meters, giving a perimeter of 6060 meters.

Adım Adım Çözüm

1
Define variables for the dimensions of the pool and the outer boundaries including the deck.
Let width = ww and length = 2w2w. The outer dimensions, which add the 2-meter deck to both sides, are width = w+4w + 4 and length = 2w+42w + 4.
This establishes algebraic expressions to represent the areas.
2
Set up an equation for the deck area by subtracting the pool's area from the total outer area.
(w+4)(2w+4)−(w)(2w)=136(w + 4)(2w + 4) - (w)(2w) = 136
The area of the deck alone is given as 136 square meters.
3
Expand the expressions and solve the equation for ww.
(2w2+12w+16)−2w2=136→12w+16=136→12w=120→w=10(2w^2 + 12w + 16) - 2w^2 = 136 \rightarrow 12w + 16 = 136 \rightarrow 12w = 120 \rightarrow w = 10 meters.
Simplifying isolates the variable ww to find the width of the pool.
4
Calculate the pool's length and then its perimeter.
Length = 2(10)=202(10) = 20 meters. Perimeter = 2(10+20)=602(10 + 20) = 60 meters.
The question asks for the perimeter of the swimming pool.

Anahtar Kavram

Solving for unknown geometric dimensions using the area of a surrounding path, followed by perimeter calculation.
Soru 35Soru →

A landscaping company is designing a parallelogram-shaped flower bed that will cover exactly 288288 square feet. If the design requires the base of the flower bed to be twice its height, what must the length of the base be in feet?

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Cevap: 24

Cevap

24
The area of a parallelogram is the product of its base and height (A=b×hA = b \times h). By substituting 2h2h for the base, the equation becomes 288=2h2288 = 2h^2. Solving for hh yields 1212. The base is twice the height, so 2×12=242 \times 12 = 24.

Adım Adım Çözüm

1
Set up the area formula
A=b×hA = b \times h
To relate the given area to the dimensions of the parallelogram.
2
Express the base in terms of height
b=2hb = 2h
The problem states the base is twice the height.
3
Substitute the expressions into the area equation
288=(2h)×h288 = (2h) \times h
To create an equation with only one variable.
4
Solve for the height (hh)
2h2=288⇒h2=144⇒h=122h^2 = 288 \Rightarrow h^2 = 144 \Rightarrow h = 12
To find the numerical value of the height.
5
Calculate the base (bb)
b=2×12=24b = 2 \times 12 = 24
The question asks for the length of the base, not the height.

Anahtar Kavram

Area of a parallelogram and algebraic substitution
Tahmini Süre:1m 0s
Soru 36Soru →

A circular metal plate has a total area of 100π cm2100\pi \text{ cm}^2. A smaller circular hole is drilled completely out of its exact center. If the area of the remaining metal plate is 64π cm264\pi \text{ cm}^2, what is the radius of the drilled hole?

Cevabı ve açıklamayı göster

Cevap: 6 cm6 \text{ cm}

Cevap

The radius of the drilled hole is 6 cm6 \text{ cm}.
The area of the removed hole is the difference between the original total area and the remaining area, which is 100π−64π=36π cm2100\pi - 64\pi = 36\pi \text{ cm}^2. Using the circle area formula (A=πr2A = \pi r^2), setting πr2=36π\pi r^2 = 36\pi yields r2=36r^2 = 36. Taking the square root of both sides confirms the radius is 6 cm6 \text{ cm}.

Adım Adım Çözüm

1
Find the area of the drilled hole by subtracting the remaining area from the total area.
100π−64π=36π cm2100\pi - 64\pi = 36\pi \text{ cm}^2.
The drilled hole accounts for the area that was removed from the total plate.
2
Set up the area formula for the drilled hole to solve for the unknown radius.
A=πr2→36π=πr2A = \pi r^2 \rightarrow 36\pi = \pi r^2.
The area of a circle is calculated using the formula A=πr2A = \pi r^2.
3
Solve the equation for the radius rr.
r2=36r^2 = 36, so r=6 cmr = 6 \text{ cm}.
Dividing both sides by π\pi leaves r2=36r^2 = 36, and taking the square root of both sides gives the radius.

Anahtar Kavram

Perimeter and Area of 2D Figures
Tahmini Süre:1m 0s
ÖncekiSayfa 2 / 2
Perimeter and Area of 2D Figures Alıştırma Soruları — Armed Services Vocational Aptitude Battery (ASVAB) — Sayfa 2 | Examkin