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Zorluk: KolayVolume and Surface Area of Solids

A right square pyramid has a height of 9 centimeters9\text{ centimeters} and a square base with a side length of 5 centimeters5\text{ centimeters}. What is the volume, in cubic centimeters, of the pyramid?

  1. A
    15
  2. B
    45
  3. 75Cevap
  4. D
    225

Cevap

75
The volume of a right square pyramid is given by the formula V=13BhV = \frac{1}{3}Bh, where BB is the area of the base and hh is the height. Since the base is a square with side length 5 centimeters5\text{ centimeters}, its area is B=52=25 square centimetersB = 5^2 = 25\text{ square centimeters}. Substituting the base area and the height of 9 centimeters9\text{ centimeters} into the formula gives V=13×25×9=75 cubic centimetersV = \frac{1}{3} \times 25 \times 9 = 75\text{ cubic centimeters}.

Adım Adım Çözüm

1
Calculate the area of the square base (BB).
B=52=25 square centimetersB = 5^2 = 25\text{ square centimeters}
The base is a square with side length 5 centimeters5\text{ centimeters}, and the area of a square is calculated by squaring its side length.
2
Apply the volume formula for a pyramid: V=13BhV = \frac{1}{3}Bh.
V=13×25×9=75 cubic centimetersV = \frac{1}{3} \times 25 \times 9 = 75\text{ cubic centimeters}
Substituting the base area of 25 square centimeters25\text{ square centimeters} and the height of 9 centimeters9\text{ centimeters} into the pyramid volume formula yields the volume.

Anahtar Kavram

The volume of a pyramid is calculated using the formula V=13BhV = \frac{1}{3}Bh, where BB is the area of the base and hh is the height.
Tahmini Süre:45s
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