Question

3.
The area of a circle is 49πcm2. Its circumference is
(a)
71π cm
(b)
14π cm
(c) 21πcm
(d) 28π cm​

Answer 1

Answer:

14

Step-by-step explanation:

Answer 2

Answer:

14πcm

Step-by-step explanation:

Let the radius of the circle be r

Given area of circle=49πcm^2

Area of circle=πr^2

πr^2=49π

Since=22/7

πr^2=49π

πr^2

r^2=49

r=√49=7cm

Radius of circle=7cm

Radius of circle=7cm

Circumference of circle=2πr

2×π×7cm

=14cm

Circumference of circle is 14πcm