By C. Oliver, A. Ledsham, R. Elvin

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**Sample text**

Find the capacity in litres of a tank measuring a) 4 m byt m by 5 m b) 3 m by -} m by 6 m c) 4 m by m by 7 m 2. Find the volume of water in litres of a tank that is half full and measures 1 a) 2 mby4mby8m b) 8 m by* m by 9 m c) 6 m by * m by 8 m 3. Find the capacity in litres of a tank measuring a) 30 cm by 20 cm by 80 cm b) 40 cm by 20 cm by 70 cm c) 60 cm by 10 cm by 90 cm 4. Find the volume of water in litres of a tank that is one-third full and measures a) 50 cm by 10 cm by 60 cm b) 40 cm by 30 cm by 50 cm c) 20 cm by 30 cm by 70 cm i Example 3 A cylindrical container of radius 7 cm and height 30 cm is full of lemonade.

Y = 4x -x2 -1 X +6 x2 -3x --ti y 3 2 x2 -2x 0 +9 -15 -25 7. +1 1 -1 8. x -1 X +1 y x2 +Sx ~~I 0 y 0 +1 -3 +9 6. y =2x-x 2 -1 10. y =x 2 -x +4 +2 X +6 x2 -x -2 -1 0 y 2 +4 -4 3 4 5 +20 -25 -5 REVISION EXERCISE B T 1. £100 is invested at an interest rate of 5% per annum. The interest £I after T years is given by the equation I= ST. I a) Copy and complete the table on the right for this equation. b) Plot a graph of this relationship showing Ton the horizontal axis to a scale of 2 cm to 1 year and I on the vertical axis to a scale of 1 cm to £2.

A) 5 3 b) 10 4 c) 3 2 X 2 2 a) 5 3 = 5 X 5 X 5 = 25 X 5 = 125 b) 10 4 = 10 = 100 X 10 X 10 X 10 X 10 X 10 = 1000 X 10 = 10 000 c) 3 2 X 2 2 = 3 X 3 X 2 X 2 = 9 X 2 X 2 = 18 X 2 = 36 2X2 1 4 1 =4 Exercise 46 Find the value of the following. 52 42 33 34 13. 10 5 16. 4 2 X 2 2 1. 4. 7. 10. 2 3 19. 5 X 2 22. 102 X 24 25. 10 2 X 3 3 28. 102 X 5 3 2. 5. 8. 11. 14. 17. 20. 32 43 10 3 54 32 X 2 3 2 2 4 X3 52 X 3 2 23. 102 X 25 26. 10 2 X 4 2 29. 3 3 X 2 2 31. 4 3 X 2 2 32. 4 3 X 2 3 3 3 2 2 34. 5 X 2 37.