Question

The radius of the cylinder whose lateral surface area is $704{cm}^2$ and height $8$ cm is:

• A. $6$ cm
• B. $4$ cm
• C. $8$ cm
• D. $14$ cm

Answer 1

The correct option is D $14$ cm

Curved surface area of a cylinder of radius "$R$" and height "$h$" $=2\pi Rh$
Hence, Curved surface area of the given cylinder $=2\times \frac{22}{7}\times r\times 8=704$

$\therefore r=14$ cm

Radius of the base of the cylinder is $14$ cm