Question

If a cylinder has a height of 21 cm and a volume of 11,144 cm^3.

Answer 1

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h\qquad \begin{cases} h=height\\ r=radius\\ ----------\\ h=21\\ V=11,144 \end{cases}\implies 11,144=\pi \cdot r^2\cdot 21$

solve for "r"