the base radius and slant height of a cone are 3cms and 4cms.find its curved surface area?
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radius r=3cm
slant height l=4cm
csa of cone=pi*r*l
=22/7*3*4
=37.7 cm
slant height l=4cm
csa of cone=pi*r*l
=22/7*3*4
=37.7 cm
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