Question

I’m using a the scale 1cm =0.5metres What is 8 cm in mètres

Answer 1

We have a scale that relates the measures in a model with the measure in the real world.

The scale is 1 cm = 0.5 m, meaning that 1 cm in the model represents 0.5 m in the real world.

If we want to know what real world measure is representd by 8 cm in the model, we can use the Rule of three as:

`\begin{gathered} 1cm\longrightarrow0.5m \\ 8cm\longrightarrow x=8cm\cdot(0.5m)/(1cm)=4m \end{gathered}`

We can see that 8 cm in the model represents 4 meters in the real world.

Answer: 4 meters.