Geometric plan

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

Correct answer:

M =  3750

Step-by-step explanation:

$$\begin{gathered} a=45\text{ m}\to \text{ mm}=45\cdot 1000\text{ mm}=45000\text{ mm } \\ b=12\text{ mm } \\ m=a\mathrm{/}b=45000\mathrm{/}12=3750 \\ M=1:m \\ M=3750=3750 \end{gathered}$$

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