Question

The area of a circle is 616 sq.cm. Find its circumference.

Answer 1

Answer: 88 cm

Step-by-step explanation:

Given,

πr2 = 616

r2 = $\frac{616 * 7}{22}$

r2 = 28 × 7

r = 14

Therefore, Circumference = 2πr = 2 × 227 × 14 = 88 cm

Answer 2

To find the circumference of a circle when given its area, you can use the formula:

Circumference = 2 * π * √(Area / π)

Given that the area is 616 sq.cm, we have:

Circumference = 2 * π * √(616 / π)

Circumference ≈ 2 * π * √(196)

Circumference ≈ 2 * π * 14

Circumference ≈ 28π cm

So, the circumference of the circle is approximately 28π cm.