the radius and slant hight of a cone are in the ratio 4:7. if its curved surface area is 792cm square, find its radius
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r=4x
l=7x
csa=22/7*r*l=22/7*4x*7x=792
x*x=9
x=3
r=4*x=4*3=12
l=7x
csa=22/7*r*l=22/7*4x*7x=792
x*x=9
x=3
r=4*x=4*3=12
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