Question

the volume the volume of two spheres are in the ratio 27 : 8 find the ratio of their curved surface areas

Answer 1

volume of sphere =4/3πr^3!!!
let the smallest sphere of radius x
& biggest sphere of radius y
the (4/3πy^3)/(4/3 πx^3)=(x/y)^3=27/8
imply that y/x=3/2,let ,x=2a &y=3a
now area of curved surface=2πr^2
now,2π(3a)^2/2π(2a)^3=9/4
and is 9:4!!!

Answer 2

sorry I didn't know that answer correctly and you can do it again