A right triangle,whose base and height are 15 cm and 20 cm.Respectively is made to revolve about its hypotenuse. Find the volume and surface area of the double cone so formed
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Area of right
angled triangle= ab/2
=15*20/2
=150
total surface area of cone =πr(l+r)
=3.14*20(25+20)
= 2826cm^2
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