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3. RectanglesPerimeter 15 m 5 m 15 m 5 m Perimeter =15 m+ 5 m+ 15 m+ 5 m= 40 m The perimeter of a shape is the distance around the outside. Length Width

4. Example 4 cm 7 cm Essential workingPerimeter = 4 + 7 + 4 + 7 = 22 cm Perimeter = 8 + 14 = 22 cm Perimeter = 2 x 11 = 22 cm Perimeter = 2 x 4 + 2 x 7 = 22 cm Discuss these different ways of showing your method. Can you think of any others?

5. Find the perimeter of each rectangular shape below. 100 m 50 m 120 m 40 m 1 2 3 4 5 8½ cm 5½ cm 90 feet 50 feet 210 cm 90 cm Not to scale. 300 m 280 ft 320 m 28 cm 600 cm = ?

6. P= 4 x 5 = 20 cm P= 5 x 6 = 30 cm P= 6 x 7 = 42 cm P= 3 + 3 + 4 + 6 = 16 mm 5 cm Find the perimeter of the shapes below. Regular PentagonRegular Hexagon Regular Quadrilateral 6 cm 7 cm Irregular Quadrilateral 3 mm 4 mm 6 mm 3 mm 9 mm 7 mm 10 mm 3 mm Irregular Pentagon Diagrams not to scale P= 3 + 10 + 3 + 7 + 9 = 32 mm Square

7. 4m 3m Diagrams Not to scale Perimeter of Compound Shapes ? ? ? Perimeter = 4 m + 7 m +3m + 1m += 22m 4m 3m 1m

8. ? ? Perimeter of Compound Shapes 8 m 2 m 5 m 2 m Not to scale Perimeter = 2 m + 5 m +4 m +2 m + 5 m +8 m = 30 m 4 m 5 m