Curved surface area of a cylinder of height 5 cm is $94.2 \mathrm{~cm}^{2}$. Radius of the cylinder

Question

Curved surface area of a cylinder of height 5 cm is $94.2 \mathrm{~cm}^{2}$. Radius of the cylinder is (Take $\pi=3.14$ )\

Professor PC Thomas Classes · Answer

(b):Curved surface area of cylinder $=2 \pi r h$\ $\Rightarrow \quad 94.2=2 	imes 3.14 	imes r 	imes 5$\ $\Rightarrow r=\frac{94.2}{2 	imes 3.14 	imes 5} \Rightarrow r=3 \mathrm{~cm}$\