Question

if a ratio of volume of toothsphere is 1:8 then the ratio of surface area is​

Answer 1

Answer:

The volume of sphere is 4/3πr^3

the volume of bigger sphere is 4/3πr^3

now,

volume of small sphere/volume of bigger sphere=4/3πr^3÷4/3πr^3= 1÷8

this give,

r^3/R^3=1/8

so,

r=1

R=2

ratio of their surface area:-

surface area of small sphere/ surface area of bigger sphere= 4π1^2/4π2^2

= 1/4

hope this helps you