1. Evaluate: (1) a) V4050222 b) V264 + V144 c) 3\/729 X 3x/IOOO d) (2/3)" 2. Solve the following equations: (1) 2a2 =1250 3b2'3=192 3. Simplify the following: (2) 33 113 7 3 4- 5 4 3 605*? "g Cim'r d 3722 b) Simplify the following: (2) _ x2+5x 10x I) x 33:"2 5x +25 1') 4xy: X15y2 5x3 . 4x2y2 8y2 ii] iii]3 xx 1v] 5x3y X38263; 20x 3x3 183631 4. If a mix of 1:3 is used to make cement-mortar screed find the amount of aggregate needed if four 50kg pockets of cement are used. (2) 5. Evaluate where possible (2) a) 144 b) J62 + 82 c) 2/43/22? d) W 6. The wet volume of bricklaying mortar is E of the dry volume. Find (2) a) The dry volume of a sample of mortar with a wet volume of 9m3. b) The wet volume of mortar if the dry volume is 7.5m3 c) If a mix of 1:4 is used to make bricklaying mortar for the sample in (b) above, calculate the cost of cement if 1m3 costs P680. cl) If 1m3 of mortar (wet) is used to lay 600 bricks, how many bricks will the volume in (a) 7. a. If the area ratio for two similar rectangular plots is 1/16, what is the ratio of their lengths? (2) b.|f the two rectangles in (5) above have their widths 8cm and xcm . If the area ratio of the two rectangles is 1/4 find the value of x. (2) 8. If two painters take 15 hours to paint a wall. How long will it take 3 painters to paint the same wall? (1) 9. If the wall in (7) above is 547712 nd the area of a wall which three painters take 24 hours to paint. (1) 10. A model of a house is done to a scale of 1:50. Find the actual area of a window with an area of 112.5m'm20n the model. ((1) 11. What is the area on the model of a door opening with an actual area of 3.2m2? (1)