Question

I really need help with thisCalculate the scale factor of DEF to ABC

Answer 1

Let:

k = Scale factor

From the figure, we can conclude:

`\begin{gathered} EF\cdot k=BC \\ \end{gathered}`

Solve for k:

`\begin{gathered} k=(BC)/(EF) \\ k=(40)/(10) \\ k=4 \end{gathered}`

Answer:

4