Question

The height of right circular cylinder with lateral surface area 396 sq. cm is 21 cm. Find the
radius of its base. (use ππ = 22/7)

Answer 1

lateral surface area=2*pi*r*h

Step-by-step explanation:

• lateral surface area of cylinder = 2*$\pi$*r*h
• 396=2*$\frac{22}{7}$*r*21
• r=$\frac{396*7}{22*2*21} =0.42$