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Area of Irregular Shapes

Area of Irregular Shapes. Objectives: I can calculate the area of irregular shapes. I can find the area of shapes that are partially covered. . Let’s Review Area and Perimeter of Regular Shapes!. 10 cm. 4 cm. A = . P = . 5 in. A = . P = . 9 cm. 7 cm. A = . P = .

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Area of Irregular Shapes

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  1. Area of Irregular Shapes Objectives: • I can calculate the area of irregular shapes. • I can find the area of shapes that are partially covered.

  2. Let’s Review Area and Perimeter of Regular Shapes! 10 cm 4 cm A = P = 5 in A = P = 9 cm 7 cm A = P =

  3. Find any unknown sides • Divide the irregular shape into squares or rectangles • Find the area of each square or rectangle • Add the areas together to find the total area of the shape Example: How to find the area of irregular shapes See next slide for example! 9cm 6cm 5cm 10cm

  4. Find any unknown sides • Divide the irregular shape into squares or rectangles • Find the area of each square or rectangle • Add the areas together to find the total area of the shape How to find the area of irregular shapes 4 cm 16 + 50 = 66 (the sum of the area of the square and rectangle) Area = 66 square cm. A = l x w A = 4 x 4 A = 16 4 cm 9cm 6cm A = l x w A = 10 x 5 A = 50 5cm 10cm

  5. Problem # 1 2m 7m 2m 4m 12m

  6. Problem # 2 11cm 4cm 6cm 10cm 4cm 7cm

  7. Problem # 3 Example Work out the area shaded in each of the following diagrams 6 cm 4 cm 2 cm 8 cm

  8. Extra Practice This problem is not in your notebook! 9m 5m 7m 5m 5m 34m

  9. Find the Area of the Rectangle Problem # 4

  10. Extra Practice This problem is not in your notebook!

  11. Left Side (Independent Practice) Create a triple T chart like the one below and solve. Irregular Shape Show Your Work Area

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