Question

If the area of a circle is 154 cm², then its perimeter is​

Answer 1

Answer:

44cm

Step-by-step explanation:

Let the radius of circle be r cm.

Now the area of circle⇒πr

2

=154cm

2

⇒

7

22

×r

2

=154cm

2

⇒r

2

=

22

154×7

⇒r

2

=49

⇒r=7cm

Perimeter of the circle=Circumference

=2πr

=2×

7

22

×7

=44cm