Question

how many balls of each of radius 0.5 CM can be made from a solid sphere of metal of radius 10 centimetre by melting the sphere​

Answer 1

Everone has 2 balls so do i

Answer 2

Given : Radius of ball=0.5cm

Radius of metal sphere = 10cm

To find: Number of small balls

Solution:

Let number of small ball be N

Step 1: Volume of 1 small ball =

$\frac{4}{3} \pi {r}^{3}$

= (4/3)π0.5^3

Step 2: There Volume of N small balls

=N×(4/3)π0.5^3 cubic cms

Step 3: Volume of metal sphere

= (4/3)π10^3 cubic cms

Step 4:Volume of metal sphere=Volume of N balls

=> N×(4/3)π0.5^3 = (4/3)π10^3

=> N=8000

Hence, 8000 small ball can be made