the total surface area of a cone whose radius is r/2 and slant height 2l is
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Answered by
910
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
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
44
Step-by-step explanation:
Total surface area of cone=πr(r+l)
Given, radius = r/2 and slant height 2l
therefore new total surface area of cone
= π r/2 ( r/2 + 2l )
= π ( r^2/4 + rl )
= πr ( l + r/4 )
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