The area of the curved surface of a cone of radius 2r and slant height l2, is(a) πrl(b) 2πrl(c) 12πrl(d) π(r+l)r

The area of the curved surface of a cone of radius 2r and slant height

1.	The area of the curved surface of a cone of radius 2r and slant height l2, is(a) πrl(b) 2πrl(c) 12πrl(d) π(r+l)r
Answer» The area of the curved surface of a cone of radius 2r and slant height $\frac{l}{2}$ , is (a) $π r l$ (b) 2 $π r l$ (c) $\frac{1}{2} π r l$ (d) $π (r + l) r$