Question

Area of circle is given below find their diameters.
$12474sqcm$

Answer 1

Area of a circle$\pi r^2$

$\Rightarrow \pi r^2=12474$sq.cm

$\Rightarrow \frac{22}{7}\times r^2=12474$sq.cm

$\Rightarrow r^2=12474\times \frac{7}{22}=3,969‬$cm

$\Rightarrow r=\sqrt{3,969}=63‬$cm.

$\therefore$ Diameter$=2r=2\times 63=126$cm.