# Geometric plan

At what scale the building plan if one side of the building is 45m long and 12mm long on a plan?

Correct result:

M =  3750

#### Solution:

$a=45 \ m \rightarrow mm=45 \cdot \ 1000 \ mm=45000 \ mm \ \\ b=12 \ \text{mm} \ \\ \ \\ m=a/b=45000/12=3750 \ \\ \ \\ M=1:m \ \\ M=3750$

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