Question

Find the radius of a circle whose circumference is $176cm$.

Answer 1

Given Circumference $=176cm$

i.e; $2\pi r=176cm$

we want radius ${}^{\prime }{r}^{\prime }$

$2\times \frac{22}{7}\times r=176$

$r=176\times \frac{7}{22}\times \frac{1}{2}$

$r=\frac{1232}{44}$

$r=28$

$\therefore$ Radius of circle

$r=28cm$