Question

Question 12
Find the volume of the sphere in terms of .
Help plz

Answer 1

7776pi since the volume of a sphere can be found by V=4/3pi(r)^3

V=4/3pi(18)^3

V=7776pi

Answer 2

`\large\boxed{972\pi\ cm^3}`

Explanation:

`\text{The formula of a volume of a sphere:}\\\\V=(4)/(3)\pi R^3\\\\R-radius\\\\\text{We have the diameter of the sphere.}\ D=18cm.\\\\D=2R\to R=(18)/(2)\ cm=9cm.\\\\\text{Substitute:}\\\\V=(4)/(3)\pi(9^3)=(4)/(3)\pi(729)=(4)\pi(243)=972\pi\ cm^3`