Question

Find radius of a circle whose are is 616 centimetres square meters

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Answer 1

Explanation:

area of circle = πr^2

616 = 22/7 × r^2

616 × 7 /22 = r^2

56 ×7 / 2 = r^2

18 ×7 /2 = r^2

126 × 7/ 2 =r^2

63×7 = r^2

r = √ 7 × 9 ×7

r = 7 × 3

r = 21....

Answer 2

Answer:

Let r be radius of given circle.

Given, area=616 cm^2

⇒πr

2

=616

⇒r

2

=616×

22

7

⇒r

2

=196

⇒r=14 cm

Explanation:

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