The area of a circle is 49π cm2. Its circumference is
Let the radius if circle be r
Given, Area of circle = 49π cm2
Area of circle = πr2
πr2 = 49π
Since = 22/7
∴ πr2 = 49π
⇒ r2 = 49
⇒ r = √49 = 7 cm
∴ Radius of circle = 7 cm
Circumference of circle = 2πr
= 2 × π × 7 cm
= 14π cm
∴ Circumference of the circle is 14π cm