Question

The area of a circle is154cm then it is circumference will be

Answer 1

pai × r square = 154
22/7 × r square =154
r square = 154 × 7 / 22
r square = 1,078/ 22
r square = 49
r = root under 49
r = 7

circumference = 2 pai × r
= 2 × 22/7 × 7
= 2×22
=44
so your answer is 44
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Answer 2

area=154cm

πr^2 = 154cm

r^2 = 154x7/22

r^2 = I4x7/2

r^2 = 7x7

r=7cm

circumference=2πr

= 2x22/7x7

=2x22

=44cm

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