anonymous
  • anonymous
Cylinder A has a radius of 12 inches and a height of 6 inches. Cylinder B has a volume of 648π. What is the percent change in volume between cylinders A and B? Cylinder B is 50% smaller than cylinder A. Cylinder B is 25% smaller than cylinder A. Cylinder B is 150% bigger than cylinder A. Cylinder B is 200% bigger than cylinder A.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
find the volume of cylinder A
anonymous
  • anonymous
3.14 * 12^2 *6 3.14 * 144 *6 2712.96
anonymous
  • anonymous
yup, now find the volume of cylinder B

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anonymous
  • anonymous
then divide the bigger volume by the smaller volume
anonymous
  • anonymous
then convert that decimal into a percent
anonymous
  • anonymous
but how do i find the volume of cylinder B when i dont know the radius
anonymous
  • anonymous
because it says the volume of cylinder B is 648 times pi
anonymous
  • anonymous
648 * 3.14 + 2034.72
anonymous
  • anonymous
no,volume of A\[=\pi 12^2*6=864 \pi\] volume of B\[=648 \pi\] change in volume\[=864 \pi-648 \pi=216 \pi\] % change\[=\frac{ 216 \pi }{ 864 \pi }\times 100=25 % \] =25 %
anonymous
  • anonymous
how did you get the volume of A to be 864.. Im confused ? @surjithayer
anonymous
  • anonymous
\[v= \pi r^2 h\]
anonymous
  • anonymous
he/she didn't get 864, he/she got 864*pi
anonymous
  • anonymous
Oh i see what you did now my bad(:
anonymous
  • anonymous
do not substitute the value of pi as the volume of B is 648 pi.
anonymous
  • anonymous
oh, never mind - listen to @surjithayer I might be wrong
anonymous
  • anonymous
i am a man.
anonymous
  • anonymous
I understand now, Thank you soooooo muchhh!!
anonymous
  • anonymous
yw

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