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Difficulty: EasyScale Drawings

A blueprint of a machine part uses a scale of 11 inch = 2.52.5 centimeters. If the part is drawn as 88 inches long on the blueprint, what is the actual length of the part in centimeters?

  1. 20Answer
  2. B
    3.2
  3. C
    2
  4. D
    200

Answer

20
The scale establishes a direct proportion where every 11 inch on the blueprint represents 2.52.5 centimeters in reality. To find the actual length corresponding to an 88-inch drawing, you must multiply the drawing length by the scale factor: 8×2.5=208 \times 2.5 = 20 centimeters.

Step-by-Step Solution

1
Identify the given scale and the drawing measurement.
The scale is 11 inch = 2.52.5 cm, and the drawing length is 88 inches.
Establishing the relationship between the drawing and the actual object is required to set up the calculation.
2
Multiply the drawing length by the scale factor to find the actual length.
8×2.5=208 \times 2.5 = 20 cm.
Since every 11 inch represents 2.52.5 cm, 88 inches will represent 88 times that amount.

Key Concept

Scale Drawings
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Topics

Scale Drawings

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