Find the area of a circle whose diameter is 7 km. – InterviewSolution

1.

Find the area of a circle whose diameter is 7 km.

Answer»

Given diameter = 7 km

Therefore radius, r = d/2 = 7/2 = 3.5

We know that area of circle = πr²

A = (22/7) × (3.5)²

A = 38.5 km²

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