Question

find the radius of the circle whose area is 616 square centimetre

Answer 1

area of a circle=πr^2
therefore
πr^2=616
=22/7×r×r=616
r^2=(616×7)/22
r^2=196
r=√196
=14cm
please mark me as the BRAINLIEST

Answer 2

given
ar. of circle=616 cm sq

ar of circle=
$pi \times {r}^{2}$
$616 = \pi \times {r}^{2}$
$616 = 22 \div 7 \times {r}^{2}$
$616 \times 7 \div 22 = {r}^{2}$
$28 \times 7 = {r}^{2} 196 = {r}^{2}$
$14 = r$