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

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Solution

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

Radius of the ball
$= 3.5 c m$

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

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

$= 179.6 {c m}^{3}$

Weight of the ball
$= 179.6 \times 0.56 = 100.5 g m$

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