1. Warm Up
(Hint: Add up the area of the 6 faces)

2. Surface Area of Prisms Objective
Understand what’s lateral area and surface area.
To find the surface area of a prism.

3. Prisms, bases, lateral faces

4. Right prism vs. Oblique prism

5. Theorem 11-1

6. Practice*
Use a net to find the surface area of each prism.

7. Practice
Use formulas to find the surface area of each prism. Round your answer to the nearest whole number.

8. Homework
P704: 8, 10, 11, 12, 21, 25-a, b, c

9. Warm Up
1. If you cut the paper towel roll along the dashed line and laid the cardboard flat, what shape would you have?
2. What are the dimensions of the shape?
3. What does the string represent on the shape?
4. How can you find the length of the string?

10. Surface Area of Cylinders
Objective
To find the surface area of a cylinder.

11. Cylinder

12. Lateral area and surface area of a cylinder

13. Lateral and Surface Areas of a Cylinder

14. Practice*
Find the lateral area of the cylinder to the nearest whole number.

15. Finding lateral Area of a Cylinder
When a roller is used, what is the width of paint applied to the floor with one complete rotation of the roller?
What is the shape of the paint applied to the floor?
How can you use the diameter instead of the radius in the formula for lateral area?

16. Finding Surface Area of a Cylinder*
Find the surface area of the cylinder in terms of 𝜋.

17. Homework
P704: 14, 16, 17, 19, 20, 22, 29