the base radius of a cone is 20cm and slant height is 25cm.Find the curved surface area of the cone
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CSA of cone=πrl
CSA= 22/7×20×25
=22×20×25/7
=11000/7
=1571.42cm2
Hence the CSA of cone is 1571.42cm2
CSA= 22/7×20×25
=22×20×25/7
=11000/7
=1571.42cm2
Hence the CSA of cone is 1571.42cm2
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