Surface Area – Triangular Prisms ________________________________________ Lesson Part I: Find the surface area. 1. How many faces does the prism have? 2. What polygons form the bases of the prism? 3. What is the formula of the area of this polygon? A = 4. What polygons form each of the other faces? 5. What is the formula for the area of this polygon? A = 6. Complete the net by labeling its dimensions. 7. Complete the table to find the surface area. Face Base (in) Height (in) Area (in2) Base Base Total 8. The surface area of the prism is _____________________ square centimeters. September 2013 Name Practice: Find the surface area of each prism. You may make a table. All triangles are equilateral. Show all work and label your answer. A. B. C. September 2013 D. E. September 2013 Surface Area – Triangular Prisms Name ________________________________________ Problem Solving Mailing tubes come in the shape of triangular prisms. At Staples, you can buy two different types of these mailing tubes. Tube A is made from recycled cardboard. Tube B is constructed of white corrugated The triangle is 3.5 inches tall. Each side of cardboard. The triangle is 2.6 inches tall. the triangle measures 4 inches. The tube is Each side of the triangle measures 3 inches. 18 inches long. The tube is 30 inches long. 1. Which tube requires the least amount of material? By how much? 2. Tube A comes in cases of 12 tubes. Each tube costs $1.58. How much will a case of tubes cost? 3. Tube B comes is cases of 50 tubes. Each tube costs $4.20. How much will a case of tubes cost? September 2013