Question

Question 1 (i)
Find the volume of a sphere whose radius is:
(i) 7 cm
$[Assume\pi =\frac{22}{7}]$

Answer 1

(i) Radius of the sphere = 7 cm
Volume of the sphere $=\frac{4}{3}\pi r^3$
$=[\frac{4}{3}\times \frac{22}{7}\times (7{)}^3]c{m}^3$
$=\left(\frac{4312}{3}\right)c{m}^2$
$=1437\frac{1}{3}c{m}^3$
Therefore, the volume of the sphere is $1437\frac{1}{3}c{m}^3$.