Question

what is the volume of a sphere with a radius of 3 inches

Answer 1

$The\ volume\ of\ a\ sphere:V=\dfrac{4}{3}\pi R^3\\\\R=3\ in\\\\V=\dfrac{4}{3}\pi\cdot3^3=\dfrac{4}{3}\pi\cdot27=4\pi\cdot9=36\pi\\\\Answer:\boxed{V=36\pi\ in^3}$