4024/11 May/Jun 2023, Question 13: Scale Drawings
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Work with two locations, Lenton and Mingfield: reverse a given bearing, then derive a map scale ratio from a measured map length and a real distance.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 1 mark
Given the bearing of Mingfield seen from Lenton is 156°, work out the bearing of Lenton as viewed from Mingfield.
- 1Back bearing = 156 + 180
- 2= 336°
Answer336
Part (b) · 2 marks
A map gap of 4.5 cm stands for a real 9 km; express the map scale as 1 : n.
- 19 km = 9 × 1000 × 100 = 900 000 cm
- 24.5 : 900 000
- 3= 1 : 200 000
Answer1 : 200 000
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