3 Tutor System
Starting just at 265/hour

# If the lateral surface of a cylinder is 94.2 $${cm}^{2}$$ and its height is 5 cm, then and i) radius of its base ii) its volume. (Use $${\pi}$$ = 3.14)

i) Given :
Height (h) of cylinder = 5 cm

Let radius of cylinder be r.
Also, CSA of cylinder = 94.2 $${cm}^{2}$$

Thus, we get that,

$$\Rightarrow$$ $$2 {\pi} r h$$ = 94.2 $${cm}^{2}$$
$$\Rightarrow$$ (2 × 3.14 × r × 5) cm = 94.2 $${cm}^{2}$$
$$\Rightarrow$$ r = 3 cm

ii) We know that,

Volume of cylinder
= $${\pi} {r}^2 h$$
= $$3.14 × {3}^2 × 5$$ $${cm}^{3}$$
= 141.3 $${cm}^{3}$$.