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This presentation is based on KEY MATHS 7 (1)

This presentation is based on KEY MATHS 7 (1). Press the LEFT mouse button to move on. A PERIMETER FENCE. Section 12 Area & Perimeter. Perimeter The total distance around the outside of a shape is called its perimeter. Section 12 Area & Perimeter. Area

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This presentation is based on KEY MATHS 7 (1)

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  1. This presentation is based on KEY MATHS 7 (1) Press the LEFT mouse button to move on

  2. A PERIMETER FENCE Section 12 Area & Perimeter Perimeter The total distance around the outside of a shape is called its perimeter

  3. Section 12 Area & Perimeter Area The amount of space inside the shape is called its area AREA OF GRASS

  4. 1 1 2 2 Ans = 40 2 2 6 2 Section 12 Area & Perimeter Example 1 What is the perimeter of this shape? Pick a starting point Then work your way around Click again for the answer

  5. 2 4 2 Ans = 38cm2 5 Section 12 Area & Perimeter Example 2 What is the area of this room? You could count the squares Click again for the answer

  6. Ans = 50cm2 Section 12 Area Area of a rectangle = length x width = 10 x 5 5cm Click again for the answer 10cm

  7. Section 12 Area Area of a triangle = base x height = 2 b x h 2 h b

  8. Section 12 Area Area of a triangle = base x height = 2 b x h 2 h b

  9. Ans = 16cm2 Section 12 Area Area of a triangle = base x height = 2 8cm 4 x 8 2 Click again for the answer 4cm

  10. Section 12 Area Area of a parallelogram = base x height = b x h h b

  11. Ans = 30cm2 Section 12 Area Area of a parallelogram = base x height = 5 x 6 6cm Click again for the answer 5cm

  12. Section 12 Area Area of a trapezium = a + b x h 2 a h b

  13. Ans = 42cm2 Section 12 Area Area of a trapezium 5 = 5 + 9 x 6 2 6 Click again for the answer 9

  14. 8cm Ans = 12cm2 3 cm (or rhombus) Area of a kite = the product of the diagonals 2 = 3 x 8 2 Click again for the answer

  15. Well done you have completed this presentation Why not try some of the other lessons Steve Hill

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