Total surface area of a cone = πr(r + l)
Curved surface area of a cone = πrl
Base area of a cone = πr²
r = radius of the base
l = slant height of the cone
If slant height is unknown, use l = √(r² + h²)
h = vertical height of the cone
Total surface area of a cone = πr(r + l)
Curved surface area of a cone = πrl
Base area of a cone = πr²
r = radius of the base
l = slant height of the cone
If slant height is unknown, use l = √(r² + h²)
h = vertical height of the cone