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B VENKATESH

· started a discussion

· 1 Months ago

ANSWER SHOULD BE 231 (Question: 259981.0 )

BASE OF CONE WILL BE HOLLOW AS PER THIS QSTN.SO BASE AREA=0

Question:

A cone is made of a sector of circle of radius 21 cm and angle is 60ยบ. What is the total surface area of cone (in  cm2   )?

Options:
A)

269.5

B)

308

C)

312.5

D)

231

Solution:

Ans: (a)

  

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
The given answer is correct.

Best wishes
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