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Lesson 6-8 Geometry: Perimeter and Area

Lesson 6-8 Geometry: Perimeter and Area. Vocabulary:. Perimeter: the distance around a figure Add up all sides Area: the amount of surface a figure covers Follow formula according to different figures Formula: shows a relationship among quantities (ex. P = 2l + 2w). Find the Perimeter:.

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Lesson 6-8 Geometry: Perimeter and Area

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  1. Lesson 6-8 Geometry:Perimeter and Area

  2. Vocabulary: • Perimeter: the distance around a figure • Add up all sides • Area: the amount of surface a figure covers • Follow formula according to different figures • Formula: shows a relationship among quantities (ex. P = 2l + 2w)

  3. Find the Perimeter: With rectangles, parallelograms, and squares:opposite sides are congruent. 5 yards 12 yards 12 + 12 + 5 + 5 = 34 yards

  4. Find the Perimeter: 15 ft 9 ft 12 ft

  5. Find the Perimeter: 20in. 8in. ? ? 12in. 10 in.

  6. Find the Perimeter: 2 7/8 in 3 ¼ in 5 ¼ in 6 ½ in

  7. Your Turn… • Find the perimeter of the figure 2.4 cm 1.6 cm 2.4 cm

  8. The perimeter of this art table is 100 inches. What is the width of the table? • 72 inches • 64 inches • 14 inches • 28 inches 36 inches

  9. Area:

  10. Find the Area: 3 in. A = lw Area = length x width A = 3 in. x 9 in. A = 27 sq. in. 9 in.

  11. Find the Area: height 12 ft. Not height 4ft. A = bh Area = base x height

  12. Find the Area: A = ½bh Area = ½ x base x height (½)(10cm)(6cm) (½)(60 cm. sq.) 60÷2 30 cm. sq. height 10 cm 6 cm base

  13. Find the Area: 59 ft 29 ½ ft

  14. Your Turn… • Find the perimeter and area of each rectangle a) b) length 13.2 mm width 8 mm 18 ft 23 ft

  15. 14. MA.B.1.3.3

  16. 17. MA.B.1.3.3

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