NAME _____________________________________________ DATE _____________________________ PERIOD ____________

Course 3 • Chapter 7 Connect Algebra to Geometry

Lesson 4 Skills Practice Surface Area of Prisms Determine the surface area of each prism. Round to the nearest tenth if necessary. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Find the surface area of a rectangular prism that has a length of 8 inches, a width of 3 inches, and a height of 6

inches. 11. Find the surface area of a triangular prism. The sides of the right triangular base measure 9 centimeters, 12

centimeters and 15 centimeters. The height of the prism is 20 centimeters.

NAME _____________________________________________ DATE _____________________________ PERIOD ____________

Course 3 • Chapter 7 Connect Algebra to Geometry

Lesson 4 Extra Practice Surface Area of Prisms Determinethelateralandsurfaceareaofeachrectangularortriangularprism.Roundtothenearesttenthifnecessary. 1.

2.

3.

4.

5.

6.

7.

8.

NAME _____________________________________________ DATE _____________________________ PERIOD ____________

Course 3 • Chapter 7 Connect Algebra to Geometry

Lesson 4 Homework Practice Surface Area of Prisms Determine the lateral and surface area of each rectangular prism. Round to the nearest tenth if necessary. 1. 2. 3.

4. 5.

6. 7. 8. When wrapping a birthday gift in the shape of a rectangular prism for his mother, Kenji adds an additional

2.5 square feet of gift wrap to allow for overlap. How many square feet of gift wrap will Kenji use to wrap a gift 3.5 feet long, 18 inches wide, and 2 feet high?

9. A company needs to package hazardous chemicals in special plastic rectangular prism containers that hold

80 cubic feet. Find the whole number dimensions of the container that would use the least amount of plastic.

NAME _____________________________________________ DATE _____________________________ PERIOD ____________

Course 3 • Chapter 7 Connect Algebra to Geometry

Lesson 4 Problem-Solving Practice Surface Area of Prisms

1. PACKAGING A packaging company needs to know how much cardboard will be required to make boxes 18 inches long, 12 inches wide, and 10 inches high. How much cardboard will be needed for each rectangular prism-shaped box if there is no overlap in the construction?

2. INSULATION Jane needs to buy insulation for the inside of a truck container. The container is a rectangular prism 15 feet long, 8 feet wide, and 7 "# feet high. How much surfaces except the floor

are to be insulation should Jane buy if all inside insulated?

3. ICE Suppose the length of each edge of a cube of ice is 4 centimeters. Find the surface area of the cube.

4. ICE Suppose you cut the ice cube from Exercise 3 in half horizontally into two smaller rectangular prisms. Find the surface area of one of the two smaller prisms.

5. CONTAINERS What is the total surface area of the inside and outside of a container in the shape of an equilateral triangular prism with a triangular base 5 meters on each side, area of base 10.8 square meters, and height of prism 2.2 meters? Round to the nearest tenth.

6. TOYS Oscar is making a play block for his baby sister by gluing fabric over the entire surface of a foam block. How much fabric will Oscar need?