Question

The area of a circle is 120 in sq. What is its circumference?

Answer 1

area of circle is 120 in sq ....divide 120 by 2 u will get 60 in sq
r=120\2=60 in sq
the formula of circumference of circle is ''2 pi r''
put in it ,u will get 376.8 in sq

Answer 2

\[Area=120=\pi r ^{2}\rightarrow \frac{ 120 }{ \pi}=r ^{2}\rightarrow r=+\sqrt{\frac{ 120 }{ \pi}}\]

Answer 3

Now, C=circumference=\[2 \pi r = 2 \pi (previous result)\]