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Transparency 5

Transparency 5. Click the mouse button or press the Space Bar to display the answers. Splash Screen. Example 5-2b. Objective. Find the perimeters of rectangles and squares. Example 5-2b. Vocabulary. Perimeter. The sum of the lengths and the widths P = 2L + 2W. Lesson 5 Contents.

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Transparency 5

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  1. Transparency 5 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 5-2b Objective Find the perimeters of rectangles and squares

  4. Example 5-2b Vocabulary Perimeter The sum of the lengths and the widths P = 2L + 2W

  5. Lesson 5 Contents Example 1Find the Perimeter Example 2Find the Perimeter of a Square

  6. Example 5-1a Find the perimeter of the rectangle. Write the formula. L represents the length of the rectangle Replace L with 7 W represents the width of the rectangle + Replace W with 4 1/2

  7. Example 5-1a Find the perimeter of the rectangle. Follow Order of Operations P E MD AS Bring down P = Multiply 2  7 Bring down + Multiply 2  4 + Add 14 + 8 P = 14 + 8 P = P = 14 P = 14 + Add dimensional analysis P = 22 P = 22 m Answer: P = 22 meters 1/2

  8. Example 5-1b Find the perimeter of a rectangle. Answer: P = 40.2 in. 1/2

  9. Example 5-2a ARCHITECTURE The base of the Eiffel Tower is shaped like a square with 125-meter sides. What is the perimeter of the base? square 125-meter sides 125 m Draw a square Write dimensions 125 m 125 m Write formula for perimeter of a square Since perimeter is the distance around the figure and each side is equal, multiply 1 side by 4 125 m P = 4s P = 4(125) Replace s with 125 2/2

  10. Example 5-2a 125 m Multiply 4  125 Add dimensional analysis 125 m 125 m 125 m P = 4s P = 4(125) P = 500 P = 500 m Answer: P = meters 2/2

  11. Example 5-2b * ARCHITECTURE A new discount store is being built with its base in the shape of a square with 75-foot sides. What is the perimeter of the base? Answer: P = 300 ft 2/2

  12. End of Lesson 5 Assignment

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