Geography
Convert the following statements into R.F.
(a) 25 cm on the map = 5 km on ground.
(b) 2½ inches on the map = 5 miles on ground.
(c) 7 cm on the map = 63000 metres on ground.
(d) 5 cm = 500 metres.
(e) 15 cm = 6 km.
Answer
(a) The scale is 25 cm to 5 km = 25 cm to 5,00,000 cm
(Since 1 km = 1,00,000 cm)
R.F. = Distance on the map / Distance on the ground
R.F. = 25 / 5,00,000
R.F. = 1:20,000
(b) The scale is 2½ inches to 5 miles = 2.5 inches to 3,16,800 inches
(Since 1 mile = 63,360 inches)
R.F. = Distance on the map / Distance on the ground
R.F. = 2.5 / 3,16,800
R.F. = 1:1,58,400
(c) The scale is 7 cm to 63000 m = 7 cm to 63,00,000 cm
(Since 1 m = 100 cm)
R.F. = Distance on the map / Distance on the ground
R.F. = 7 / 63,00,000
R.F. = 1:9,00,000
(d) The scale is 5 cm to 500 m = 5 cm to 50,000 cm
(Since 1 m = 100 cm)
R.F. = Distance on the map / Distance on the ground
R.F. = 5 / 50,000
R.F. = 1:10,000
(e) The scale is 15 cm to 6 km = 15 cm to 6,00,000 cm
(Since 1 km = 1,00,000 cm)
R.F. = Distance on the map / Distance on the ground
R.F. = 15 / 6,00,000
R.F. = 1:40,000
Related Questions
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What is a Scale? Name the main methods of representing the scale of a map.
Convert the following representative fractions into statements:
(i) 1: 63360 (to show miles).
(ii) 1: 1000000 (to show kilometres).
(iii) 1: 100 (to show metres).
(iv) 1: 10 (to show metres).
(v) 1: 200,000 (to show kilometres).Draw linear scales and mark the following distances on them.
(i) 1 cm = 1 km (9 km).
(ii) 1 cm = 100 km (1100 km).
(iii) 1: 500000 (13 km).
(iv) 1: 20000 (250 metres).