Question

if the radius of a sphere is doubled find the ratio of volume of new sphere
to original spare
​

Answer 1

Answer:

8 times

Explaination:

Let the radius of the sphere be r

so, the volume of sphere =4/3πr^3

the new radius is double of the original radius=2r

Volume of new sphere=4/3π.8r^3

ratio of new sphere to the original sphere =volume of new sphere / volume of original sphere

=4/3π.8r^3 whole divided by 4/3πr^3

=8 times