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23. [Probability] 28. . Three coins are tossed. Complete the tree diagram below to illustrate all the possible outcomes. [Area] * Find the area of the shaded triangle below, given that M is the midpoint of AB. Start ,A ~ First coin H T /"'" Second coin H T /\ Third coin H /\ T + /"'" H H T /\ c T /\ H TH T 29. 14 em 2 [Volume] * The water level in a public swimming pool has fallen 4 cm due to evaporation. Use the pool dimensions given below to work out how many liters of water must be added to the pool to restore the desired level. [Hint: 1 L = 1000 em3] 25m What is the probability of having two heads and one tail? 24. B I 4cm [Geometry] 1m Find the value ofx. 2m [All measurements are in em.] 7.5m 10,000 L 30. [Surface Area] * Using S.A. = 41tr2 and 1t "'" 272, find the surface area of the sphere below. 2 3 25. [Angles] * Find the value of xc. 154 in.2 31. [Pythagorean Theorem / Trigonometry] * Find the value of x, given cos e ~12 26. [Measurement 32. /Time] [Problem 0.6 X How many fe are there in an area of 720 in?? Solving 1] = 0.4 30 * 0.125 - 0.25 X 0.1 5 ft2 33. 27. [Perimeter] * Find the perimeter of the rectangle below. 4km [Problem 2] * A bricklayer knows from experience that no more than 6% of any load of bricks is broken on delivery. Since it is often not possible to purchase exactly matching bricks at a later date, it is important that the original order include sufficient bricks for the job. If bricks can only be ordered in lots of 100, and 8000 bricks are required to finish the job, how many bricks should the bricklayers order? White 4.2 page 54 Solving @ Copyright Not to be reproduced without permission. J. B. Wright. Echuca 2004