A+ A− B

# Surface Area of a Cone

## Formula and Examples of Surface Area of A Cone

A cone has two main 'surface areas'
the lateral surface area: this is the red region on the 'side' of the cone. (formula for lateral surface area)

the total surfrace area: This is the lateral surface area plus the area of the circular bottom.
Formula for Lateral Surface Area

Formula for Total Area of a cone
The total area of a cone is the sum is of the lateral surface area and the area of the circular bottom of the cone.
Practice Problems

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Solid Geometry