.The total surface area of a cone whose radius is r/4 and slant height 4l is
π r(l+r)
2π r(l+r)
2π rl
π r (l+r/16)
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Answered by
2
Step-by-step explanation:
Total surface area of cone=πr(r+l)
Given, radius =
2
r
and slant height =2l
Therefore new total surface area of cone =π
2
r
(
2
r
+2l)
=π(
4
r
2
+rl)
=πr(l+
4
r
)
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0
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