1. Warm-up An equilateral triangle is inscribed in a circle with a radius of 4 meters. Find the area of shaded region? 4 m

2. Sketch a net for each three- dimensional figure.

3. What’s that net?

5. Sketch and label each three- dimensional figure.

6. Sketch the three-dimensional representation.

7. What’s that net?

8. Bases – two congruent and parallel faces. Lateral Faces – the faces that are connecting to the bases. Lateral Edges – the edges that formed lateral faces Prisms Right Pentagonal Prism

9. Oblique Rectangular Prism height

10. Draw a net of this box and label the measurements.

12. What is 2lw of the rectangular prism? What is (2w+2l) of the rectangular prism? S = area of the bases + height (perimeter of the base) The area of the two bases The perimeter of the base

13. Theorem 12.2 - Surface Area of a Right Prism The surface area S of a right prism can be found using the formula: S = 2B+Ph, Where B is the area of a base, P is the perimeter of a base, and h is the height. B = lw P =2l + 2w

14. Example 1: A book with dimensions 9 inches by 6.5 inches by 0.6 inch is shown below. What is the area of the entire cover of the book? Round the answer to the nearest tenth of a square inch. Note: This figure is not drawn to scale. 9 inches 0.6 in 6.5 in. Area = area of the two bases + area of the side

15. Finding Lateral and Surface Area Lateral AreaSurface Area 18 cm Using the Pythagorean Theorem to find the length=10