Question

If we double the radius of sphere then find the ratoi of their volumes

Answer 1

let the original radius be r
so the original volume4/3Tr
new radius 2r
(2r)34/3 TT (8r5)
SOnew volume e4/3
ratio b4/3T /4/3T (8r)
- r3 /8rs1/8
so the ratio is 1:8