Question 78

What is the circumference (in cm) of a circle whose area is 616 sq cm?

Area of a circle = 616

$$\pi r^{2} = 616$$

$$\frac{22}{7}r^{2} = 616$$

$$r = 14cm$$

circumference = $$2\pi r = 2 \times \frac{22}{7} \times 14 = 88$$

So the answer is option D.

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