Arithmetic Ability
Percentage

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Q.

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 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 ?

View Answer

Correct choice: C

Explanation:

circumference of A = 2πr = 8 => so r = 4π volume = π×(4π)2×10 = 160π circumference of B = 2πr = 10 => so r = 5π volume = π×(5π)2×8 = 200π so ratio of capacities = 160/200 = 0.8 so capacity of A will be 80% of the capacity of B.
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