Tanks M and B are each in the shape of a right circular cylinder. The interior of tank M has a height of 10 meters and a circumference of 8 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of tank M is what percent of the capacity of tank B?
Choose the correct choice from the following choices:
A) 75%
B) 80%
C) 100%
D) 120%
E) 125%
B.   For M, r=8/2pi. Its capacity = (4pi)^2 * 10= 160pi   For B, r=10/pi. Its capacity = (5pi)^2 *8 = 200pi   M/80% = 160pi/200pi = 0.8160  /200= 
<gadget id="calculator">160  /200</gadget>
<output>4/5 = around 0.8</output>
0.8
<result>B</result>
Tanks M and B are each in the shape of a right circular cylinder. The interior of tank M has a height of 10 meters and a circumference of 8 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of tank M is what percent of the capacity of tank B?