Subject: mathqa
Question: tanks a and b are each in the shape of a right circular cylinder . the interior of tank a has a height of 9 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 a is what percent of the capacity of tank b ?
Option: 
A: 125 %
B: 72 %
C: 80 %
D: 100 %
Answer: B