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