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.

Question

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.

anonymous · Answer

@Hero  @.Sam.  can you help me?

anonymous · Answer

@lalaly

hero · Answer

Hint: Use the volume of a cylinder formula and the percent change formula to figure it out.

hero · Answer

Volume of a Cylinder:
$$V_c = \pi r^2 h$$

Percent change:
$$\frac{\%\Delta}{100} = \frac{|a - b|}{a}$$

anonymous · Answer

π(12)^2(6) 

right?

anonymous · Answer

i got 275.16

hero · Answer

Looks right. Finish the calculation

anonymous · Answer

how would i do that?

hero · Answer

Use the "percent change" formula

anonymous · Answer

im sorry. i am so confused