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12 June, 19:17

A cylinder-shaped drainage pipe 66 in. long measures 25.12 in. around.

What is the volume of the drainage pipe?

Enter your answer as a decimal in the box. Use 3.14 for π.

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Answers (1)
  1. 12 June, 19:45
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    V=hpir^2

    tricky, they didn't give us radius

    they just gave circiufmerece

    c=2pir

    25.12=2pir

    divide by 2 both sides

    12.56=pir

    divide by 3.14 both sides

    4=r

    subsitutet

    v=hpir^2

    v=66pi4^2

    v=66pi16

    v=1056pi

    v=3315.84 cubic inches
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