Question 1171773
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When the scale is 1:1000, you need 20 x 20 = 400 square sheets to cover the map.



With the scale 1:500, you need 4 times as many square sheets, i.e. 4*400 = 1600.



With the scale 1:10000, you need  {{{(1/100)*400}}} = 4 square sheets.
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