Problem Solving Questions PDF - Project Maths

38. Two circles are centred at the origin, as shown. The point Q 5,12circle and the point P 0,s is on the larger is on the smaller circle. If AB 3 , what is the value of s?Q (0,s)Q (5,12)ABA,B,C,K ,Z39. In the diagram, there are 26 levels, labelled . There is one dot on level A.Each of levels B,D,F,H,K ,and Z contains twice as many dots as the levelimmediately above. Each of levels C,E,G,K ,and Y contains the same number ofdots as the level immediately above. How many dots does level Z contain?Row ARow BRow CRow D40. In the figure below, B, C, D are points on the circle with centre O, and thelengths of the segments . If the , find ABO in terms ofAB BOCOD .CBADO41. A hybrid car can run on petrol or on ethanol. It can drive for 495 kilometers on 45litres of petrol and it can drive 280 kilometers on litres of ethanol. If the price ofpetrol € 1.61 per litre, find the price per litre of ethanol which will give the same costper kilometre as petrol?Page 8 of 10