Question

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

Answer 1

Answer:

Circumference=88

Step-by-step explanation:

Area=π$r^{2}$=616

$\frac{22}{7}  r^{2} =616$

$\\ r^{2} =616 .\frac{7}{22} =196$

∴ r=√196=14

∴Circumference=2πr=2*$\frac{22}{7}$*14=88

Answer 2

Answer:

circumference = 88 cm

Step-by-step explanation:

area of circle =  $\pi r^{2}$

⇒616= $\frac{22}{7}$ × $r^{2}$

=$\frac{616 * 7}{22}$ = $r^{2}$

= 196 = $r^{2}$

r = 14

d = r×2 = 14 × 2 = 28cm

circumference = $2\pi r = 28$ × $\frac{22}{7}$ = 88 cm

∴ Circumference = 88 cm