6 The diagram shows the positions of two boats, A and B, drawn to a scale of 1 : m. The actual distance between the two boats is 4 km. (a) Find m, giving your answer correct to 1 significant figure. (b) Measure the bearing of A from B. (c) A third boat is positioned at C. C is on a bearing of 120° from A and on a bearing of 195° from B. Find and label C on the diagram. (d) Find, by measurement, the actual distance in kilometres from A to C. (e) The diagram shows the positions of the boats, A and B, and a harbour, H. AB = 4 km, AH = 6 km and ABHˆ = 70°. (i) Calculate AHBˆ. (ii) The boat at A travels in a straight line to the harbour at H. The average speed of the boat is p km/h. It takes 12 minutes 20 seconds for the boat to travel from A to H. Calculate p.