Question

Find the diameter of a circle whose area is 616cm²

Answer 1

area of circle = 616cm^2

πr^2 = 616

r^2 = 616 × 7/22

r^2 = 196cm ^2

r = √ 196

r= 14 cm

radius = 14 cm

so , diameter = 14×2 =28 cm.

I hope It will help you.

Answer 2

area of circle = 616 cm²

area of circle = πr²

616 = 3.14r²

r² = 196

r = 14

d = 2×r = 28 cm