Question

the volume of a hemisphere is four times that of a sphere find the ratio of the radius of the hemisphere

Answer 1

hello buddy,,,,

let the radius of sphere be r1 and that of hemisphere be r2,,

volume of sphere =4 (volume of hemisphere)..

4/3πr1^3= 4×2π/3r2^3
on solving,,,

(r2/r1)^3= 1/2

r2/r1= 1/3√2
or r2:r1= 1:2
hope it helps u