Question

Area of circle is given below find their diameters.
$176sqcm$

Answer 1

Area of a circle$=\pi r^2$

$\Rightarrow \pi r^2=176$sq.cm

$\Rightarrow \frac{22}{7}\times r^2=176$sq.cm

$\Rightarrow r^2=176\times \frac{7}{22}=56$cm

$\Rightarrow r=\sqrt{56}=\sqrt{4\times 14}=2\sqrt{14}$cm.

$\therefore$ Diameter$=2r=2\times 2\sqrt{14}=4\sqrt{14}$cm.