Question

What would be the curved surface area of a cylinder whose radius is 4 cm and its height is 8 cm?

• A. 55π sq cm
• B. 45π sq cm
• C. 64π sq cm
• D. 74π sq cm

Answer 1

The correct option is C 64π sq cm

Radius of the cylinder (r) = 4 cm
Height of the cylinder (h) = 8 cm

Curved surface area of the cylinder
= $2\pi rh$
= $2\pi \times 4\times 8$
= $64\pi sqcm$