Question

the area of a circle is 7850 CM square find its diameter​

Answer 1

TAKING VALUE OF PIE AS 3.14

Area of a circle =3.14 ×r×r

Given that the area of the circle is 7850cm^2

So radius= 50 cm

We know diameter is twice the radius so,

diameter =50cm

Answer 2

Answer:

area of circle =22÷7r^2

22÷7r^2=7850

r^2=7850×7÷22

r=