Cylinder A has a radius of 8 inches and a height of 3 inches. Cylinder B has a volume of 96π. What is the percent change in volume between cylinders A and B?

a. Cylinder B is 50% smaller than cylinder A.
b. Cylinder B is 75% smaller than cylinder A.
c. Cylinder B is 150% bigger than cylinder A.
d. Cylinder B is 200% bigger than cylinder A.

Question

Cylinder A has a radius of 8 inches and a height of 3 inches. Cylinder B has a volume of 96π. What is the percent change in volume between cylinders A and B? 

a. Cylinder B is 50% smaller than cylinder A.
b. Cylinder B is 75% smaller than cylinder A.
c. Cylinder B is 150% bigger than cylinder A.
d. Cylinder B is 200% bigger than cylinder A.

directrix · Answer

The volume of Cylinder A = pi*8^2*3  (area of Base times height)

directrix · Answer

In terms of pi, what is this:  Cylinder A = pi*8^2*3     @lowcard2

anonymous · Answer

192 pi ?

directrix · Answer

Okay, percent change is tricky. I think of it as additive rather than multiplicative.

directrix · Answer

Apply the formula.

anonymous · Answer

i got a?

directrix · Answer

I did 96 pi - 192 pi all over 192 pi and multiplied by 100 to get a percent.

directrix · Answer

I agree.