Question

Find the area of
il 37 .4 cm
a circle whose circumference​

Answer 1

Step-by-step explanation:

let the radius of the circle be r cm.

circumference of the circle = 31.4

given = 2πr = 31.4

= 2 x 31.4 x r = 31.4

= r = 31.4/ 2 x 31.4 = 5 cm

Area of the circle

= πr2 = 31.4 x 5sq cm2

= 3.14 x 25 cm2

= 78.5 cm2

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