Volume of a cylinder of height 3 cm is 48π. Radius of the cylinder is :

Let radius of cylinder be r cm.

Given,

Height of cylinder (h) = 3 cm

By formula,

⇒ Volume of cylinder = πr²h

⇒ 3πr² = 48π

⇒ 3r² = 48

⇒ r² = $\frac{48}{3}$

⇒ r² = $\frac{48}{3}$

⇒ r² = 16

⇒ r = $\sqrt{16}$ = 4 cm.

Hence, Option 3 is the correct option.