Surface Area of Pyramids and Cones

1
Section 12.3

• Surface Area of Pyramids and Cones

2
Lateral Area of a Regular Pyramid

• (1/2) P l
• Where l is the slant height of the pyramid
• P is the perimeter of the base

3
SURFACE AREA of a Regular Pyramid

• (1/2) P l B
• Where l is the slant height of the pyramid
• P is the perimeter of the base
• B is the area of the base.

4
Lateral Area of a Right Circular Cone

• p r l
• Where r is the radius and l is the slant height

5
Surface Area of a Right Circular Cone

• p r l p r2
• Where r is the radius and l is the slant height