Question

The Area of a circle is 616cm^2.Find it's circumference.
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Sorry I chose English by mistake it will be maths question
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Answer 1

88 cm

Explanation:

find r

a=22/7×r^2

r^2=616×7/22

r=sq.root 196

r=14 cm

perimeter=2 pie r

2×22/7×14^2

perimeter=88 cm

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Answer 2

Explanation:

Area =616cm.sq.

Area= pie r²

Circumference=2pie r

Area =3.14r²

616=3.14r²

616/3.14=r²

196.2=r²

Root196.2=r

r=14.1

Now,

Circumference=2pie×r

=>2×22/7×14.1

=88.62