Question

If the area of a circle is 616 cm^2 , find its
circumference: (Use it 22)
П =​

Answer 1

Answer:

area of circle = πr ^2

616 = 22 / 7 × r ^ 2

616 ×7 / 22 = r^2

196 = r^ 2

radius = 14 cm

circumference = 2 πr

= 2× 22 / 7 × 14

circumference = 88 cm