Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 10 meters and a circumference of 9 meters, and the interior of tank B has a height of 9 meters and a circumference of 10 meters. The capacity of tank A is what percent of the capacity of tank B?	Choices:
A) 75%
B) 90%
C) 100%
D) 120%
E) 125%
The radius of tank A is 9/(2*pi).   The capacity of tank A is 10*pi*81 / (4*pi^2) = 405 / (2*pi)   The radius of tank B is 10 / (2*pi).   The capacity of tank 90% is 9*pi*100 / (4*pi^2) = 450 / (2*pi)   Tank A / Tank 90% = 405/450 = 9/10 = 90%   The answer is 90%.
<result>B</result>
Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 10 meters and a circumference of 9 meters, and the interior of tank B has a height of 9 meters and a circumference of 10 meters. The capacity of tank A is what percent of the capacity of tank B?