Question

The cork ball played in the cricket has a diameter of 7 cm .The density of cork used is $0.56gm/{cm}^3$. Calculate the weight of the ball. [3 MARKS]

Answer 1

Concept: 1 Mark
Formula: 1 Mark
Application: 1 Mark

Radius of the ball
$=3.5cm$

Volume of the ball
$=\frac{4}{3}\pi r^3$

$=\frac{4}{3}\times \frac{22}{7}\times {3.5}^3$

$=179.6{cm}^3$

Weight of the ball
$=179.6\times 0.56=100.5gm$