Question

If the area of a circle is 616 cm", find the length of its circumfe​

Answer 1

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^2A=πr

2

616=\frac{22}{7}\times r^2616=

7

22

×r

2

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

2

=

22

616×7

r^2=196r

2

=196

r=\sqrt{196}r=

196

r=14r=14

The radius of the circle is r=14 cm.

The circumference of the circle is C=2\pi rC=2πr

C=2\times \frac{22}{7}\times 14C=2×

7

22

×14

C=88C=88

The circumference of the circle is 88 cm.

Step-by-step explanation:

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