i havent been able to solve this help

Mathematics
Tutor: None Selected Time limit: 1 Day

May 6th, 2015

since the volume = pi*r^2*h

increasing the radius by a factor of 4 increases the volume by 4^2 = 16

increasing the height by a factor of 4 increases the volume by 4

Therefore,

10 x 16 x 4 = 640 cubic centimeters

choice D

May 6th, 2015

thank you so much i must have messed up somewhere in my work.

May 6th, 2015

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