#map scale

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edgy lagoonBOT
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spring cobalt
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for a only

slate coral
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map x:
assume 1 cm²:x km²
then 10 cm²:10x km²
map y:
assume 4 cm²:y km²
=> 1 cm²:(y/4) km²
then 2.5 cm²:(2.5y/4) km²
=> 2.5 cm²:(5y/8) km²
then
10x/(5y/8) = 10/2.5
10x * (8/5y) = 4
16x/y = 4
x/y = 1/4
x:y = 1:4