EPRI Rigger’s Handbook Practice Test

How many cubic inches are in one cubic foot?

1728 12 144 5184

Correct Answer:

1728

Explanation:

Volume scales with the cube of the linear dimensions. A cubic foot has 1 foot on each side, and since 1 foot equals 12 inches, convert to inches in every direction: 12 inches × 12 inches × 12 inches. Multiply to get 1728 cubic inches. The other numbers represent linear or area measurements, not a full cube’s volume: 12 is a single dimension, 144 is an area (12 × 12), and 5184 isn’t the volume of a 1-foot cube in cubic inches. So the correct result is 1728 cubic inches.

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