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Mathematics 14 Online
OpenStudy (anonymous):

A cylindrical piece of iron pipe is shown below. The wall of the pipe is 1.25 inch thick.

OpenStudy (anonymous):

OpenStudy (anonymous):

What is the approximate inside volume of the pipe? 88 cubic inches 49 cubic inches 142 cubic inches 154 cubic inches

OpenStudy (anonymous):

|dw:1343604494764:dw|

OpenStudy (btaylor):

so the radius is 3-1.25 = 1.75 inches, and the height is 16. V = π r^2 h, so V = 154 cubic inches

OpenStudy (anonymous):

woo thanks (:

OpenStudy (btaylor):

woo yw

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