the height of a cone is 16 cm and the area of its base is 3/5 that of its curved surface.Find the radius of the base
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Answer:
Given height of cone =16 cm
radius of base =12 cm
(1) slant height l=
r
2
+h
2
l=
(12)
2
+(16)
2
l=
144+256
l=
400
l=20 cm
∴ slant height of cone is 20 cm
(2) CSA of cone = πrl
=3.14×12×20
=240×3.14
CSA of cone = 753.6 cm
2
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