In a cone, Lateral Surface Area (LSA) is ……… if slant height and radius of the base are 25 cm and 7 cm respectively.
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
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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 \(cm^2\)
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