Question
There is a conical tent whose slant height is 14 m. If the curved surface area of cone is 308 m2,  then its base area is _______.
Answer: Option D
:
D
The curved surface area of a cone =Ï€rl
where, r is radius and l is slant height.
⇒308=πrl
⇒227×r×14=308
⇒r=308×722×14
⇒r=7m
Base area
=Ï€r2
=227×72
=154m2
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:
D
The curved surface area of a cone =Ï€rl
where, r is radius and l is slant height.
⇒308=πrl
⇒227×r×14=308
⇒r=308×722×14
⇒r=7m
Base area
=Ï€r2
=227×72
=154m2
Was this answer helpful ?
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