Total surface area of a cone whose radius is p/2 and slant height as 2l is :
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Answered by
3
Answer:
We know, the total surface area of cone=πr(r+l).
Given, radius =
2r and slant height =2l.
Therefore, the new total surface area of cone =π×
2r(2r+2l) =π( 4r2+rl) = πr (l+4r ).
Answered by
10
Step-by-step explanation:
TSA of cone = πr(l+r)
r = p/2, l = 2l
TSA of cone = π .p/2. 2l
= πpl
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