The following formula is for the area, A, of the curved surface area of a cone.
[tex]a = \pi \times r \times l[/tex]
where r is the radius and / is the slant height of the cone.
Calculate the total surface area of a cone with radius 6 cm
and slant height 13 cm.
![The following formula is for the area, A, of the curved surface area of a cone.[tex]a = \pi \times r \times l[/tex]where r is the radius and / is the slant heig class=](https://us-static.z-dn.net/files/d90/5a4958cd9fe6f03afc4daf9b99515d01.jpg)