Question

if
the radius of a sphere is doubled then find the ratio of their volumes​

Answer 1

Answer:

hope it helps you......

Answer 2

Answer:

1:8

Step by step explaination

let the original radius be r

so the original volume = 4/3πr³

new radius = 2r

so new volume = 4/3π (2r)³ = 4/3 π (8r³)

ratio = 4/3πr³/4/3π (8r³)

= r³ / 8r³ = 1/8

so the ratio is 1:8

HOPE IT'S HELPFUL