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The length scale factor = 5/3 So the area scale factor is (5/3)2 = 25/9
1 : 20
Take the 'reciprocal' of the given scale factor to go the other way. The 'reciprocal' of a number is 1/(the number). 3 ==> 1/3 5 ==> 1/5 1/7 ==> 7 2/3 ==> 3/2 etc.
if 1 cm is 5km.... 3cm? 5+5+5 ..15km dirrtyy suckas!
8 cm x 10 cm