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 conetexa pi times r times ltexwhere r is the radius and is the slant height of the coneC class=