Curved surface area of right circular cone of height 5cm and base 12 cm
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h= 5 cm
r =12cm
l^2=h^2 +r^2
l^2= 25+144
l^2 = 169
l= 13cm
C.S.A. of cone= 1/2 ×l× 2pie ×r
= 1/2× 13×75.36
=489.84 cm^2 Ans.
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