Question

According to rubner's surface rule, the surface to volume ratio for a spherical animal with a radius of 3 inches would be

Answer 1

The surface area of sphere is
`A=4 \pi R^(2)=4 \pi 3^(2)=36\pi` and the volume is
`V= (4)/(3) \pi R^(3)=(4)/(3) \pi 3^(3)=(108)/(3) \pi=36\pi`.
If you want to count the ratio between surface area and volume, it will be equal to
`(36\pi )/(36\pi)=1`.