1. Mensuration Area of rectangle = l x b Trapezium area= ½(a+b)h Area of Kite =½ (a x b) Exercise 1 on page 50 – Solve exercises 8,9,10

2. Triangle area = ½ b x h when two sides and the angle between them are known use the following formula: area = ½ b x a x sin C Exercise 2 on page 52 – Solve the exercises 19, 24, 25

3. Circle area =  r 2 Circle circumference =  d Exercise 3 on page 54 – Solve exercises 11, 12

4. Arc length and sector area Arc L = (  /360) 2  r where  is the angle of the arc. Sector area A= (  /360)  r 2 Exercise 5 on page 56 – Solve exercises 1,4, 5

5. Volume Prism volume of prism= area of cross section x length = A x L

6. h Cylinder Volume =  r 2 h Exercise 7 on page 59 – Solve exercises 1, 2 r

7. Pyramid – Volume = 1/3 (base area) x height Base area Height

8. Cone Volume= 1/3 x h x  r 2 Sphere volume = 4/3 x  r3 Exercise 8 on page 61 – Solve exercises 13,14,15

9. Surface areas Cylinder – Surface area = 2  r h Cone – Surface area =  r l Sphere – Surface area = 4  r 2 Exercise 9 on page 64 – Solve exercises 13,14,15

10. Revision Exercise Turn to page 65 and solve exercises 3,4,17 And on page 66 solve exercise 1