Question

Find the circumference of the circle whose diameter is $5.6cm.$

Answer 1

It is given that diameter of the circle $=5.6cm$

Radius of the circle $=\frac{5.6}{2}cm$

Circumference of the circle $=2\mathrm{\pi r}$

$=2\times \frac{22}{7}\times \frac{5.6}{2}$

$=22\times 0.8$

$=17.6cm$

Hence the circumference of the circle is $17.6cm$