iron pipe

Geometry Level 3

An iron pipe is 10 feet long and has an inside diameter of 1 feet. If it has a uniform thickness of one-half inch, what is the volume of this iron pipe in cubic inches? Round off your answer correct to two decimal places.


The answer is 2356.19.

A Former Brilliant Member by A Former Brilliant Member

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1 solution

The volume is equal to the area of the base multiplied by the length. The base is an annulus. For easier calculation, convert all units to inches before computing.

V = π ( 6. 5 2 − 6 2 ) ( 12 ) ( 10 ) ≈ 2356.19 c u b i c i n c h e s V=\pi(6.5^2-6^2)(12)(10)\approx \boxed{2356.19~cubic~inches}

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