Question

The area of a circle is 616 cm². Find its circumference​

Answer 1

The circumference of the circle is 88 cm.

Given : The area of the circle is 616 cm square.

To find : The circumference of the circle ?

Solution :  

The area of the circle is

A=\pi r^2

616=\frac{22}{7}\times r^2

r^2=\frac{616\times 7}{22}

r^2=196

r=\sqrt{196}

 

r=14

The radius of the circle is r=14 cm.

The circumference of the circle is

C=2\pi r

C=2\times \frac{22}{7}\times 14

The circumference of the circle is 88 cm. ✔️✔️

Answer 2

Answer:

radius Is 14

circumference Is 2πr^2

2*22/7*196

2*22*28

circumference is 1232