If the circumference of a circle is 176 cm, then find its radius.

Given,

The circumference of the circle = 176 cm.

The circumference of the circle = $2\mathrm{\pi }\times \mathrm{radius}$.

176 = $2\mathrm{\pi }\times \mathrm{radius}$  (We know that $\mathrm{\pi }=\frac{22}{7}$)

radius = $\frac{176}{2\mathrm{\pi }}=\frac{176}{2\times {\displaystyle \frac{22}{7}}}$

$=\frac{176\times 7}{2\times 22}=28 \mathrm{cm}$

Therefore, the radius of the circle is 28 cm.