The circumference of a circle is 22 cm. Find its area. [Take π = 22/7]
Let the radius if circle be r
Circumference of circle = 22 cm
2πr = 22 cm
2 × 22/7 × r = 22 cm
r = 22 × 1/2 ×7/22 cm
r = 3.5 cm
Area of Circle = 
= 22/7 × 3.5 × 3.5 cm2
= 38.5 cm2
∴ Area of Circle = 38.5 cm2
5