Question

What is the volume of a sphere if the radius is 9?

Answer 1

V=4/3pi r^3
Answer is 3053.63

Answer 2

Answer:
`Volume = 972\pi units^(3)`

Step-by-step explanation: To find the volume of a sphere, start with the formula for the volume of a sphere.

`Volume = (4)/(3) \pi r^(3)`

Notice that our sphere has a radius of 9 units so we can plug 9 into our formula.

`Volume = ((4)/(3))(\pi)(9 units)^(3)`

Now, let's simplify the exponent. 9 units³ is equal to 9 units × 9 units × 9 units or 729 units³.

`Volume = ((4)/(3)) (729 units^(3)) (\pi)`

Notice that we can cross cancel
`3` in
`(4)/(3)` and
`729` to
`1` and
`243.`

`Volume = (4) (243units^(3)) (\pi)`

`Volume = 972\pi units^(3)`