Question

Find the density of ball of mass 7700g whose radius is 7cm.

Answer 1

We know density=mass/volume

Given,

mass=7700g

Now we have to calculate the volume of the ball.

The ball is a sphere.

Volume=$4/3\pi r^{3}$

 =4/3*22/7*7*7*7

=4/3*1078cm ³

density=mass/volume

=7700g/(4/3*1078cm³)

=7700*3/4*1078 g/cm³

=23100/4312

=5.3571 g/cc approximately

This is the required answer.

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