Question

A capsule of medicine is in the shape of a sphere of diameter $3.5$mm. How much medicine(in $m{m}^3$) is needed to fill this capsule?

Answer 1

Capsule is of form of sphere,

Radius of sphere = $\frac{3.5}{2}=1.75mm$

Medicine needed for its filling = Volume of sphere

$=\frac{4}{3}\pi r^3$

$=\frac{4}{3}\times \frac{22}{7}\times 1.75\times 1.75\times 1.75$

$=22.46m{m}^3$