A) 110 sq cm
B) 100 sq cm
C) 70 sq cm
D) 49 sq cm
Correct Answer: A
Solution :
(a): Given that, \[\therefore \]Radius of a right circular cone \[=3.5\] cm and slant height of a right circular cone \[\left( l \right)=10\] cm \[\therefore \]lateral surface area of a cone\[~=\pi rl\] \[=\frac{22}{7}\times 3.5\times 10-110c{{m}^{2}}\]
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