SEND: Work for Submission for Week 2 Show the essential working in the spaces provided for ALL questions. A search and rescue helicopter shines a light down from a vertical height of 50 metres as shown below. The circular area of light it creates on the ground has a diameter of 10 metres. Question 1 The helicopter is elevated an additional 15 metres away from the ground. The diameter of the circular area of light on the ground is now closest to A. 8 m B. 13 m C. 15 m 50m D. 20 m E. 25 m 10 mQuestion 2 The helicopter moves to a height so that the diameter of the circular area increases 'om 10 metres to 40 metres. The area of the circular light is now A. four times what it was before. B. eight times what it was before. C. sixteen times what is was before. D. thirty-two times what is was before. E. sixty-four times what it was before. Further Mathematics Unit 4 Page 2 Week 2 SEND Work Question 3 The value of x in the following figure is A. 20 B. 25 C. 33 22 25 10 D. 45 E. 55 [Hint: Separate out the similar triangles and match up the corresponding sides and angles]Question 4 Ben is making a 1: 100 model of a car with an engine capacity of 2.3 litres (2300cm3). If Ben wants to include a scale model of the engine, then the capacity of the model engine should be A. 0.0023 cm3 B. 0.023 (31113 C. 0.23 01113 D. 2.3 cm3 E. 23 cm3 Question 5 B Triangle ABC is similar to triangle AXY. X AX = WIN AB A If the area of AABC = 108 cm, the area of AAXY is Y C A. 32 cm2 B. 48 cm- C. 54 cm- D. 72 cm- E. 81 cm-Question 6 A cylindrical block of wood has a diameter of 12 cm and a height of 8 cm. A hemisphere is removed from the top of the cylinder, 1 cm from the edge, as shown below. 1 cm 1 cm 14 -+ 14 - + 8 cm 12 cm The volume of the block of wood, in cubic centimetres, after the hemisphere has been removed is closest to A. 452 B. 606 C. 643 D. 1167 E. 1357Question '7 A triangular prism with a cross-section of an equilateral triangle is shown on the right. The side lengths of the triangle are 40111 and the length of the prism is 10cm. The total surface area in square cm is A. 46.93 4 cm B. 30 C. 93.36 D. 126.93 E. 133.86 Question 8 A proposed swimming pool is to be constructed in the western suburbs of Melbourne. The design of the swimming pool is shown in the diagram below. The pool has two sections: one section has a flat base, while the other section has a sloping base. From the shallow end of the pool, the first 25 metres of the pool has a constant depth of 0.9 metres. Halfway along the length of the pool, the depth begins to increase at a constant rate, reaching a maximum depth of 2.2 metres. 50 m F E G 2.2 m 0.9 m 25 m H 12 m B (a) Name the shape of the quadrilateral ABCF. (b) Calculate the distance EZ. Write your answer in metres, correct to two decimal places. [Hint: draw out the triangle that is involved in calculating El]. (c) Calculate the area of the side of the pool bound by ABCDEFA. Write your answer in square metres, correct to one decimal place.Further Mathematics Unit 4 Page 5 Week 2 SEND Work (d) Using your answer to part c., find the volume of water required to fill the pool. Write your answer correct to the nearest cubic metre. (e) The sloping section of the base of the pool bound by the rectangle BCGH is painted first and that section of the pool is filled before the flat section of the base is painted. Calculate the volume of water required to fill the section of the pool with the sloping base, up to the level of the flat base. Write your answer correct to the nearest cubic metre. [Hint: Visualise the section that will be filled up with water and draw the 3-D diagram that represents it] Question 9 The top two-metre section of a five-metre high cone is removed. Calculate the percentage of the total volume of the remaining (bottom) part. 2 m 3 mBelow are the quiz questions. You can do them first and then go online to enter your responses and get immediate response. If you get less than 4/5, this indicates that you need to spend more time reviewing the work for the week. Please submit this section together with the other questions in the main section. Circle the letter beside the correct answer. 1. The volumes of two similar solids are in the ratio 8:27. The ratio of their surface areas is: A. 2:3 B. 2:43 C. V8: 27 D. 4:9 E. VIG : 181 2. In the given triangles the length of XZ is 50% greater than AC. The ratio of the areas is: X A. 4:25 B. 9:4 C. 16:9 60 D. 81 : 16 E. 7:5 609 B ZFurther Mathematics Unit 4 Page 7 Week 2 SEND Work 3. An inverted right circular cone of capacity 1000 cm' is filled with water to half of its depth. The volume of water (in cm ) is: A. 125 B. 500 h C. 250 D. 300 E. 400 4. The perimeter of the figure shown in centimetres is: A. 34 7 cm B. 24+5x 1 2 cm C. 24+2.5x 3 cm D. 29+ 5x -12 cm - E. 29+2.5x 5. The formula for the total surface area for the object shown is: A. Kabhi B. 2 x 1/ibh + ab + 2 x ah C. 3(% bh + ab) D. 12bh + 3ab E. bh + 3ab