Declan is producing a scale drawing of a swimming pool he plans to build. The pool’s dimensions are 2 m by 6 m. When he measures the drawing on his plan he sees that it is 8 cm by 24 cm. What scale should he include on his plan?
Solution
Practice questions 10.2
1. Convert the following values into centimetres. (i) 3 m (ii) 40 mm
(iii) 2 km
2. Copy and complete the following table. (i)
Scale
Length on diagram Actual length
(iv) 3·5 km (v) 10 000 mm (vi) 0·5 m (vii) 1·25 km
(ii) 1 : 3 1 : 4
5 cm 12 cm 1·5 m 15 cm
3. Which of the following should every map show? (a) An ocean (b) A train station (c) A scale
4. What is the actual distance between A and B in metres, using this map, given the ruler is measuring centimetres?
(iii)
(iv)
(v) 1 : 35 3 : 10 18 mm 8 cm 9 m 21 m
(vi)
(vii) 2 : 5 4·7 cm 2·4 km 30 m 70.5 m
(viii)
Section A Introducing concepts and building skills