Volume= (4/3)(3.14)(r)^3
You already know what pi is, so figure out what the radius is.
Radius= diameter divided by 2
When you get your answer, substitute that for “r”, and then raise it to the third power, then multiply that by 3.14
Multiple your answer by 4, then divide by 3 and that should be your answer
Don’t forget to round.
I hope this was helpful