Question

The ratio of surface area and volume of the spare of unit radius is A) 3:4
B) 4:3
C) 3:1
5) 1:3

Answer 1

Required ratio is 3:1

•Surface area of sphere = (4πR²)

• Volume of sphere = (4πR³)/3

• area : volume = (4πR²): (4πR³)/3

= 3:R

• As R = 1 unit

• Surface Area : volume = 3:1