1. Area & Perimeter Area of a rectangle = Area of a triangle = Area of a parallelogram = Area of a trapezium =

2. Area & Perimeter Area of a rectangle = length x Breadth Area of a triangle = Area of a parallelogram = Area of a trapezium =

3. Area & Perimeter Area of a rectangle = length x Breadth Area of a triangle = ½ x base x perpendicular height. Area of a parallelogram = Area of a trapezium =

4. Area & Perimeter Area of a rectangle = length x Breadth Area of a triangle = ½ x base x perpendicular height. Area of a parallelogram = base x perpendicular height Area of a trapezium =

5. Area & Perimeter Area of a rectangle = length x Breadth Area of a triangle = ½ x base x perpendicular height. Area of a parallelogram = base x perpendicular height Area of a trapezium = ½(a + b)h

6. Area & Perimeter Area of a circle = Circumference of a circle =

7. Area & Perimeter Area of a circle =  r 2 Circumference of a circle =

8. Area & Perimeter Area of a circle =  r 2 Circumference of a circle =  D or 2  r

9. Example Calculate the area for each of the following shapes (i) 7.4cm 8.2cm 9.3cm

10. (ii) 8cm 5cm

11. (iii) (iv) 12cm 3.2m

12. (v) 9cm 13cm 7cm

13. Example Calculate the shaded region in the shape below 25m 13m

14. Example The area of a circle is given as 205 m 2. What is its diameter?

15. 5cm Example Work out the circumference for each of the following circles (a)(b) 17mm

16. 45m Example Work out the perimeter of the semi circle drawn below

17. Example Work out the radius of a circle which has an circumference of 30 centimetres.

18. 18cm 5cm Example Which has the largest perimeter?