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nonagerian

· started a discussion

· 1 Months ago

? (Question: 259981.0 )

how can we get a 4d cone from a 2d circle?

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)

  

mrinal shastry

· commented

· 1 Months ago

question is correct
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