Find the total surface area of a cone whose radius is r/2 and slant height is 21.
Answers
Answered by
4
Answer:
πr{r+4l}/2 sq units
Step-by-step explanation:
given
slant height = 2l
radius = r/2
total surface area of the cone = 2π*radius(radius+slant height)
=2π*r/2[r/2+2l]
=πr{r+4l}/2 sq units
Answered by
1
Answer:
πr(l+4 r )
hope this answer is helpful to you
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