This is how to do map enlargement and map reduction

IN REDUCING ANY MAP TO GIVEN SIZE, THE FOLLOWING STEPS SHOULD BE FOLLOWED:




  • Measure the length and width of the map.
  • Divide the length and width by 2 or 4 if you are asked to reduced the map to half or a fourth of its original size. For example, if the length and width of a map are 24cm and 20cm respectively, such a map should measure 12cm by 10cm if seduced to half its size and 6cm by 5cm if reduced to a fourth of its size and so on.
This is how to do map enlargement and map reduction
  • Having reduced the original map, it is obvious that the scale would equally change. Therefore, if a map has a scale of 1:50,000, the scale of the map changes to 1:100,000 if the size has been reduced to half, and 1:200,000 if the size of the map has been reduced to a fourth of its original size.
  • The features to be shown on the reduced map should also be proportional to the required size of the map.
  • When you have finished drawing the reduced map, remember to write its title and the new horizontal scale.
IN REDUCING ANY MAP TO GIVEN SIZE, THE FOLLOWING STEPS SHOULD BE FOLLOWED:




IN ENLARGING ANY MAP THE FOLLOWING STEPS SHOULD BE TAKEN

  • Measure the length and width of the original map.
  • Multiply the length and width by 2 or 4 respectively if you intend to enlarge the map to twice or thrice its original size.For example, if the length and width of a map are 5cm and 3cm respectively, such a map would measure 10cm by 6cm if enlarged to twice its size and 20cm by 12cm if enlarged four times its size and so on.
  • Having enlarged the original map, it is equally obvious that the scale would change. Therefore, if a map has a scale of 1:60,000, the scale of the map changes to 1:30,000 if the size has been enlarged twice and 1:15,000 if the size of the map has been enlarged to four times its original size.
This is how to do map enlargement and map reduction
  • The features to be shown on the enlarged map should also be proportional to the required size of the map.
  • When you have finished drawing the enlarged map, write its title and the new horizontal scale.

Before one can know whether to reduce or enlarge a map, it may be necessary to divide the initial scale (scale of the original map) by the scale of the new map to be drawn. For example if the scale of a map is 1:50,000 and is to be reproduced to a scale of 1:200,000, divide the former scale with the latter as follows:
50000/200000=1/4 Therefore the new map should be 1/4 times the size of the original map.

IN ENLARGING ANY MAP THE FOLLOWING STEPS SHOULD BE TAKEN

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