1. 10-4 Surface Areas of Pyramids and Cones
Objective – Find the surface area of pyramids and cones.

2. Geometry Standard M(20-24)
Students compute the volumes and surface areas of prisms, pyramids, cylinders, cones, and spheres; and students commit to memory the formulas for prisms, pyramids, and cylinders.

3. Cones and Pyramids Slant Height Height Pyramid Pyramid Slant Height

4. Theorem 10-3 Lateral Area and Surface Area of a Regular Pyramid
Base Perimeter
Slant Height B
Surface Area
Lateral Area
Base Area

5. #1 Finding Surface Area of a Pyramid
Find the surface area of a square pyramid with base edges 5 m and slant height 3 m.

6. #2 Finding Surface Area of a Pyramid
Find the surface area of a regular hexagonal pyramid with a slant height 20 in and sides 8 in.

7. Theorem 10-4 Lateral Area and Surface Area of a Cone Lateral Area
Radius
Slant Height
Surface Area
Lateral Area
Base Area

8. #3 Finding the Surface Area of a Cone
The radius of the base of a cone is 5 m. Its slant height is 13 m. Find the surface area.