A circular tank has a radius of 7 feet. Using 22/7 for pi, what is the area of its base?
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Correct answer to question 51 (Arithmetic Reasoning): 154 square feet
Method
The area of a circle is pi times the radius squared. The radius squared is 49, and 22/7 times 49 gives 154 square feet. Using 2 times pi times the radius instead would give the circumference, 44 feet.
Updated: November 2026
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