In a cone, (l+r)(l-r) = ………

In a cone, r=7 cm, h=10 cm then l= ……….. cm.

In a cone, r=8 cm, h=11 cm then l= ……….. cm.

The curved surfaec area (c) of a cone is pirl , where l=sqrt(r^(2)+h^(2)) , express h in terms of c and r.

The area of the curved surface of a cone of radius 2r and slant height l/2 is a) pirl b)2pirl c)1/2 pir l d)pi(r+l)r

The area of the curved surface of a cone of radius 2r and slant height l/2 is a) pirl b) 2pirl c) 1/2 pir l d) pi(r+l)r

In cone h=12cm, l=13cm, r=?

The slant height (l) of a cone is the square root of the sum of the squares of its radius (r) and its vertical height (h). If for a cone, l=17cm and r=15 cm, then find h.

The total surface area of a cone of radius r/2 and length 2l , is a)2pir(l+r)b)pir(l+r/4) c)pir(l+r) d)2pirl