Examples of Math Problems: A cylinder has a volume of 19 cm^3. If the radius is doubled, what is the volume of the new cylinder?

Wednesday, May 8, 2013

A cylinder has a volume of 19 cm^3. If the radius is doubled, what is the volume of the new cylinder?

Volume for a cylinder is:
%0D%0AV=pi%2Ar%5E2%2Ah%0D%0A%0D%0A

%0D%0AV=pi%2Ar%5E2%2Ah%0D%0A%0D%0A

so if radius doubles the new volume is
%0D%0A%0D%0AV%5Bnew%5D=4%2AV=19%2A4=95%0D%0A%0D%0A

%0D%0A%0D%0AV%5Bnew%5D=4%2AV=19%2A4=95%0D%0A%0D%0A

new volume 19 cm^3

:)

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