Question

In a cone, Lateral Surface Area (LSA) is ……… if slant height and radius of the base are 25 cm and 7 cm respectively.

A) 450 cm²

B) 550 cm²

C) 650 cm²

D) 150 1/7 cm²

Answer 1

Correct option is: B) 550 cm²

Given that

Slant height of the cone is l = 25 cm

and Radius of the base of the cone is r = 7 cm.

\(\therefore\) Lateral surface area of the cone = \(\pi rl\)

= \(\frac {22}7\) \(\times\) 7 \(\times\) 25 = 550 \(cm^2\)

Answer 2

Correct option is: B) 550 cm²