Question

the formula for the volume of a cone can be constructed using what fraction of the area of a circle formula?

Answer 1

$\bf \textit{area of a circle}\\\\ A=\pi r^2\\\\ -------------------------------\\\\ \textit{volume of a cone}\\\\ V=\cfrac{\pi r^2 h}{3}\implies V=h\left( \stackrel{\textit{a third of a circle's area}}{\cfrac{\pi r^2}{3}} \right)$