Question

a metallic cuboid 63 centimetres into 21 cm into 11 cm is melted and recast into a cylinder of height 42 cm find its volume

Answer 1

Solution:

Given that a solid sphere of radius =8 cm

With this sphere, we have to make spherical balls = 1 cm

Since we don’t know number of balls let us assume that number of balls be n

We know that,

Volume of the sphere = \frac{4}{3}\prod r^{3}

The volume of the solid sphere equal to sum of the n spherical balls.

= n(\frac{4}{3}\prod 1^{3})= \frac{4}{3}\prod r^{3}

= n= 8³ =n= 512

Hence 512 numbers of balls can be made of radius 1 cm of a solid sphere of radius 8 cm.

Answer 2

hope this helps you quickly