Foundation exercise P.48

1. Foundation exerciseP.48 1. a) Linear scaleb) Representative fraction (R.F.)c) Statement2. “ 1 : 50 000 “ means that 1 cm represents 50 000 cm or 500 m.3. The meaning of “to” is “represents”.4. It means that 0.5 cm represents 100 m.5. a) should be corrected to 1 : 20 000 b) should be corrected to 1 cm to 200 m c) should be corrected to 0 250 500 750 1000 m / km (add unit)6.Yes, the two scales are the same.7.Figure 2 has a larger scale.8.a) 1 : 150 000 b) 1 : 500= 1 cm to 150 000 cm = 1 cm to 500 cm = 1 cm to 1 500 m = 1 cm to 5 m = 1 cm to 1.5 kmc) 1 : 3 600 d) 1 : 20 000= 1 cm to 3 600 cm = 1 cm to 20 000 cm = 1 cm to 36 m = 1 cm to 200 m

2. 9.a) 1 cm to 250 m b) 1 cm to 0.5 km = 1 cm to 25 000 cm = 1 cm to 500 m = 1 : 25 000 = 1cm to 50 000cm = 1 : 50 000c) 0.5 cm to 150 m d) 1 cm to 2.4 km= 1 cm to 300 cm = 1 cm to 2 400 m = 1 cm to 30 000 cm = 1 cm to 240 000 cm = 1 : 30 000 = 1 : 240 00010.a) 1 : 25 000 b) 1 : 4 0000 250 500 750 1000 m 0 40 80 120 160 200 m11.a) The first part of the linear b) The first part of the linear scale is 1 cm. scale is 2 cm. It represents 150 m of ground It represents 2 km of ground distance. distance.∴ 1 cm to 150 m ∴ 2 cm to 2 km = 1 cm to 15 000 cm = 1 cm to 1 km = 1 : 15 000 = 1 : 100 00012.A13. a) Large b) Small