Question

if thediameter of a sphere is 42 CM then find its volume

Answer 1

IT THE DIAMETER IS 42CM 
THEN ITS RADIUS IS 21CM

THE VOLUME OF SPHERE=4/3π r cube
                                              4/3×22/7×21×21×21
                                               =38808 cm cube

Answer 2

Hey Mate!
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Here is your answer :
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Given,

Diameter of Sphere = 42cm

Radius = 42/2 = 21cm

$volume \: of \: sphere = \frac{4}{3} \pi \: {r}^{3} \\ \\ = \frac{4}{3} \times \frac{22}{7} \times {21}^{3} \\ \\ = \frac{4}{3} \times \frac{22}{7} \times 21 \times 21 \times 21 \\ \\ = 4 \times 22 \times 21 \times 21 \\ \\ = 88 \times 441 \\ \\ = 38808 {cm}^{3}$

HOPE THIS HELPS U...