1. Find the surface area of the prism. COURSE 2 LESSON 8-8 Then find the total area of the five faces. top bottom left side front side back side 10(26) + 10(24) + 10(10) + (10)(24) + (10)(24) = 840 1212 1212 The surface area of the triangular prism is 840 cm 2. 8-8 First draw a net for the prism. Surface Area of Prisms and Cylinders

2. Find the surface area of the cylinder. Round to the nearest tenth. COURSE 2 LESSON 8-8 Step 1 Draw a net. Step 2 Find the area of one circle. A = r 2 = (3) 2 = (9) 28.27 cm 2 8-8 Surface Area of Prisms and Cylinders

3. (continued) COURSE 2 LESSON 8-8 Step 3Find the area of the rectangle. (2 r)h = 2 (3)(2) = 12 37.70 cm 2 Step 4Add the areas of the two circles and the rectangle. Surface area = 28.27 + 28.27 + 37.70 = 94.2 The surface area of the cylinder is about 94.2 cm 2. 8-8 Surface Area of Prisms and Cylinders

4. 1.Draw a net for a triangular prism. Find the surface area of each. Round to the nearest tenth. 2.rectangular prism: 12 cm by 8 cm by 9 cm 3.cylinder: radius 6 cm, height 10 cm COURSE 2 LESSON 8-8 603.2 cm 2 552 cm 2 8-8 Sample: Surface Area of Prisms and Cylinders