Find the area of circle whose cicumferrence is 22cm.

1.	Find the area of circle whose cicumferrence is 22cm.
Answer» Circumference of circle = 22 cmLet the radius of the given circle be \'r\'Circumference of a circle = 2πr⇒ 22 = 2\xa0× 22/7\xa0× r⇒ r = (22\xa0× 7)/(22 × 2)⇒ r = 154/44⇒ r = 3.5 cmArea of circle =\xa0πr²⇒ 22/7\xa0× 3.5 × 3.5⇒ 269.5/7= 38.5 cm²So, the area of the given circle is 38.5 cm²

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