Question

what is the ratio of surface area of sphere to its volume ? (a) 3:r (b) 2:r (c) 4:3 (d) 1:3r​

Answer 1

Answer:

Volume of sphere = 4/3 π r³

Surface area = 4 π r²

» Ratio = (4 π r²) / (4/3 π r³)

» Ratio = 3 : r

Answer 2

Answer:

Surface area to volume ratio of a sphere equals to 3 r .

Step-by-step explanation:

Where r is the sphere's radius. Surface area of a sphere with radius r equals to 4πr2. The volume of this sphere is 4 3πr3.

Hence, option a is the correct answer.