Map scale

The rectangular plot has in a scale of 1: 10000 area 3 cm2 on the map. What content does this plot have on a 1:5000 scale map?

Correct result:

S2 =  12 cm2

Solution:

S1=3 cm2 k=10000/5000=2  S2=k2⋅ S1=22⋅ 3=12 cm2

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