A cylinder has a volume of $135pi$ , Its height is 15 feet. What is its diameter?

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Answer 1 · 2017-02-19T13:25:05

$6$ ft

Volume of cylinder $=pir^2h$

$:.pir^2h=135pi$

$:.r^2=(135pi)/(pih)$

$:.r^2=(135cancelpi)/(cancelpi xx15)$

$:.r^2=135/15$

$:.r^2=9$

$:.r=sqrt9$

$:.r=3$

diameter of cylinder $=2 xx r=6$ ft

A cylinder has a volume of 135pi135pi, Its height is 15 feet. What is its diameter?