Question

What is the formula for calculating volume of a sphere?

Answer 1

Sphere Formulas in terms of radius r: Volume of a sphere: V = (4/3)πr. Circumference of a sphere:
http://www.wikihow.com/Calculate-the-Volume-of-a-Sphere

Answer 2

Looks like your formula is glitched there bud. Here ya go.
\[V=\frac{ 4 }{ 3 }\pi r^3\]

Answer 3

@Squirrels is correct. Since we are looking for volume it will be \(\sf r^3\)

And if you are interested in how we got that, this video shows it pretty well :)
https://www.youtube.com/watch?v=xuPl_8o_j7k