Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 5 meters and a circumference of 4 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of tank A is what percent of the capacity of tank B?  Choose the correct choice from the following choices:
A) 10%
B) 80%
C) 100%
D) 120%
E) 125%
For A, r=4/2pi. Its capacity = (2pi)^2 * 5= 20pi   For B, r=10/pi. Its capacity = (5pi)^2 *8 = 200pi   10%/B = 20pi/200pi = 0.1   10%20  /200= 
<gadget id="calculator">20  /200</gadget>
<output>1/10 = around 0.1</output>
0.1   10%
<result>A</result>
Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 5 meters and a circumference of 4 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of tank A is what percent of the capacity of tank B?