Question

If the dimensions of a cylinder are doubled, then its volume is quadrupled. True or False. Please HELP!!!

Answer 1

8 times

Answer 2

false

Answer 3

Hmm... Is there anyway I can check?

Answer 4

That is the surface area, not counting top and bottom.

Answer 5

okay, yeah that makes since...

Answer 6

oh sorry for that blunder

Answer 7

yeah i just checked it is false. :)

Answer 8

\[V=\pi r ^{2}h\] for a right circular cylinder

Answer 9

Yup. Thanks for the help! :)

Answer 10

If you double the radius, volume is quadrupled. If you double the height, volume is doubled. If you double both... 8 times.

Answer 11

old volume= (pi)r^2h
new volume=(pi)(2r)^2(2h)=8times old volume

Answer 12

Perfect! Octupled :)