The radius and slant height of a cone are in the ratio 4:7. If its curved surface area is 792cm2, find its radius
the height and length of a cone are same are not.
then why ( h )using in( l )position.
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r= 4
l= 7
c.s.a = πrl
792 = 22/7 × r×7
r = 792/22
r = 36
l= 7
c.s.a = πrl
792 = 22/7 × r×7
r = 792/22
r = 36
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