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Surface Area — the sum of the Areas of each ____________ that make up a solid 3-D figure. Rectangular PRISMS: 1) 2) SA= 2lw + 2lh + 2wh Math-7 NOTES DATE:

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Presentation on theme: "Surface Area — the sum of the Areas of each ____________ that make up a solid 3-D figure. Rectangular PRISMS: 1) 2) SA= 2lw + 2lh + 2wh Math-7 NOTES DATE:"— Presentation transcript:

1 Surface Area — the sum of the Areas of each ____________ that make up a solid 3-D figure. Rectangular PRISMS: 1) 2) SA= 2lw + 2lh + 2wh Math-7 NOTES DATE: ______/_______/_______ What: surface area of prisms and cylinders Why: To calculate the surface area of both rectangular prisms and cylinders. What: surface area of prisms and cylinders Why: To calculate the surface area of both rectangular prisms and cylinders. NAME: length width height Top/ Bottom Front/ Back Right/ Left

2 CYLINDERS: 1) 2) SA= 2 Π r² + 2 Π rh height radius Top/ Bottom Curved Surface

3 1.2.3. 4.5.6. 7.Suzanne has a jewelry box she wants to cover with wallpaper to match her room. Her box is 12 cm long, 6 cm wide, and 5 cm high. How much paper will she need to cover the box? 8. What is the surface area of a cardboard carton if it is 14 inches wide, 10 inches tall, and 16 inches long? 9. Mark had an old trunk he wants to use in his living room. He plans to use some upholstery fabric to make it look new. How much fabric will he need to cover it if it is 4 ft. long, 2 ft wide, and 2.5 ft tall? DATE: _____/______/_____ NAME:___________________ Prisms:

4 1.2.3. 4.5.6. 7. Lynn made a kaleidoscope that she wants to cover in metallic wrapping paper. The structure is 9 inches tall and has a radius of 1.5 inches. About how much metallic paper will she need? 8. Louise has a large cylindrical container that she wants to paint. It is 4 ft. tall and 2 ft. in diameter. What is the surface area she will need to paint? 9. Mr. Butterworth baked a cake in the shape of a cylinder. The cake had a diameter of 9 in. and a height of 5 in. He spread chocolate icing over the entire cake (except the bottom). How many square inches of icing did he use? cylinders:


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