Question

find the area of circle whise circumfrence is 22​

Answer 1

Answer:

circumference of circle = 2 * 22/7 * r

so, 2* 22/7*r = 22

r = 3.5cm

area of circle = 22/7* r*r

area of circle = 22/7 * 3/5 * 3.5 = 38.5cm

Answer 2

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Given:

Circumference of circle = 22

2πr = 22

2 × (22 / 7 )r = 22

( 44/7 ) r = 22

r = (22 ×7)/44

r = 7/2

r = 3.5 cm

Since ,

Area of circle = πr^2

= 22/7 × 7/2 × 7/2

= 77/2

= 38.5 cm ^2

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