Question

the area of a circle is 616 CM square find its circumference

Answer 1

Answer:

Area of circle=πr²

616=r²22/7

616*7/22=r²

196=r²

r=√196=14

Circumference=2πr

=2*22/7*14

=88cm

Step-by-step explanation:

Answer 2

Answer:

The circumference of the circle is 88 cm.

Step-by-step explanation:

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 $C=2\pi r$

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

$C=88$

The circumference of the circle is 88 cm.