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The scale "4 cm = 1 m" is a factor of 1:25 (1/25th scale). 1m/.04m = 25
1 cm times 20cm
12m = 1200 cm 1200cm / 30 cm = 40 SO THE ANSWER IS 1:40 by Hanny Tufail hanny.tufail@gmail.com
Convert the units of both sides to the same, then remove the units and simplify (if possible by dividing both sides by a common divisor greater than 1). eg The Landranger series map scale of 2 cm equals 1 km: 1 m = 100 cm 1 km = 1,000 m → 1 km = 1,000 x 100 cm = 100,000 cm 2 cm : 1 km → 2 cm : 1 x 100,000 cm → 2 cm : 100,000 cm → 2 : 100,000 → 1 : 50,000
If 2cm = 1 m then 3 cm = 1.5 mAnswer2 cm = 0.02 m and 3 cm = 0.03 m, there is not other possibility.Explanation There is... the question is about scale, possibly on a map, or on a plan. If 2 cm on the map represents (=) 1 metre in realily, then 3 cm on the map represents 1.5 metre in reality.