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Warm Up

Find the perimeter and area of each polygon. Show work and include units! 1. 2. 3. . 20 m. 12 m. 6 in. 13 m. 12 m. 5 in. 25 m. 7 in. 14 cm. Warm Up. 8 cm. 11 cm. Lesson 5-1: Surface Area of Cubes and Rectangular Prisms. I can…. Vocabulary. Surface Area Net Cube

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Warm Up

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  1. Find the perimeter and area of each polygon. Show work and include units! 1. 2. 3. 20 m 12 m 6 in 13 m 12 m 5 in 25 m 7 in 14 cm Warm Up 8 cm 11 cm

  2. Lesson 5-1:Surface Area of Cubes and Rectangular Prisms I can… Vocabulary • Surface Area • Net • Cube • Right Prism • find the surface area of a cube. • find the surface area of a rectangular prism.

  3. The total area of the surface of a three dimensional object *We will use nets to help us determine the surface area Surface Area

  4. A two-dimensional figure that can be folded on its segments or curved on its boundaries to form a three-dimensional figure. Net

  5. A three-dimensional figure with 6 square faces. Cube

  6. First, let’s draw a net of a cube. 1. If one side length is 3 cm long, what is the area of one square? 9 squared cm 2. How many squares do we have? 6 squares Surface Area of a Cube 3. What is our surface area for this cube? 54 squared cm

  7. http://www.youtube.com/watch?v=sskf3tF2heU Video Over Surface Area of a Cube

  8. What is the surface area of the cube? Examples

  9. A prism that has two bases, one directly above the other, and has its lateral faces as rectangles. Right Prism

  10. A prism with six rectangular faces. Rectangular Prism

  11. http://www.youtube.com/watch?v=oR1ukNC1pvA Video Over Surface Area of a Rectangular Prism

  12. First, let’s draw a net of a rectangular prism. SA= 2[(length x width) +(length x height)+(width x height)] SA= 2[(3 x 2)+(3 x 6)+(2 x 6)] Surface Area of a Rectangular Prism SA= 2[(6)+(18)+(12)] SA= 2(36) SA= 72 squared cm

  13. What is the surface area of the rectangular prism? SA= 2[(5 x 4)+(5 x 10)+(4 x 10)] SA= 2[(20)+(50)+(40)] SA= 2(110) SA= 220 squared cm Examples

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