Question

Calculate the perimeter of a circular field with an area of 3675 square meters, using an approximation of π as 3.

A 160 m Correct Answer Incorrect Answer
B 150 m Correct Answer Incorrect Answer
C 200 m Correct Answer Incorrect Answer
D 210 m Correct Answer Incorrect Answer
E none of these Correct Answer Incorrect Answer

Solution

Let the radius of the circular field = r m So the area of the circular field = π × r2 = 3675 r2 = 1225, r = 35 So the circumference of the circular field = 2 × 3 × 35 = 210 m

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