Question

Find the diameter of a wheel whose circumference is $264cm$.

Answer 1

Circumference $=264cm$

$2\pi r=264cm$

Radius is $r$

$2\times \frac{22}{7}\times r=264$

$r=264\times \frac{7}{22}\times \frac{1}{2}$

$r=\frac{1848}{44}$

$r=42$

$\therefore$ Radius of Circle $r=42cm$