If slant height of a cone is 26m
and its base diameter is 20m.
Find its height.
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Step-by-step explanation:
Answer
Curved surface area of a cone =πrl, where r is the radius of the cone and l is the slant height.
Radius of the tomb =
2
Diameter
=7m
Hence, CSA of this conical tomb , =
7
22
×7×25=550 sq. m.
Cost of white washing the tomb at Rs. 210 per 100m
2
=
100
210
×550= Rs. 1155
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