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Q. What do we mean by finding the perimeter of a shape?

Q. What do we mean by finding the perimeter of a shape? Q. What strategies might you use for calculating the perimeter of a rectangle?. You could. – add together the lengths of the sides; – double the length, double the breadth and then adding these two answers together;

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Q. What do we mean by finding the perimeter of a shape?

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  1. Q. What do we mean by finding the perimeter of a shape? Q. What strategies might you use for calculating the perimeter of a rectangle?

  2. You could... – add together the lengths of the sides; – double the length, double the breadth and then adding these two answers together; – add together one length and one breadth and then double this answer.

  3. 1 5.5m 3 2 3cm 4.5m 25cm 1 cm 4 5 12 cm 19 mm 89 m Obviously they are not to scale!  9mm 41 m

  4. Q Do you have to measure all the sides of a rectangle? Q What units of measurement might you use?

  5. This is called a COMPOUND SHAPE because it is made up of different rectangles.

  6. 10 - 7 = 3cm 15 – 10 = 5cm

  7. 15 + 10 + 5 + 3 +10 + 7 =

  8. This is called a COMPOUND SHAPE because it is made up of different rectangles.

  9. Q How do we work out the area of a shape? Length x width = area

  10. 1cm² What is the area of the shape?

  11. 1 5m 3 2 3cm 4m 12cm 2 cm 4 5 3 cm 10 mm 8 m Obviously they are not to scale!  9mm 4 m

  12. So what is the area of this compound shape? 16cm 10cm 10cm 8cm

  13. So what is the area of this compound shape?

  14. SATS Challenge 4 cm What is the area of this shape? 2 marks 10 cm 7 cm 10 cm

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