1. Find the surface area of the figure.
Problem of the Day

2. Section 12-3b Surface Areas of Cones

3. Then
Now
Objectives
You found the lateral areas and surface areas of pyramids.
Find lateral areas and surface areas of cones.

4. Common Core State Standards
Content Standards
G.MG.1 – Use geometric shapes, their measures, and their properties to describe objects.
Mathematical Practices
1) Make sense of problems and persevere in solving them.
6) Attend to precision.
Common Core State Standards

5. Cone

6. A waffle cone is inches tall and the diameter of the base is inches. Find the lateral area of the cone. Round to the nearest tenth.
Example 4

7. A sugar cone is 8 inches tall and the diameter of the base is inches. Find the lateral area of the cone. Round to the nearest tenth.
Example 4

8. Find the surface area of each cone. Round to the nearest tenth.
Example 5

9. Find the surface area of each cone. Round to the nearest tenth.
Example 5

11. p.859 #4 – 6, 14 – 18, 33
Homework