Answer:
The scale factor is 4.
Step-by-step explanation:
Given,
The scale drawing has a scale of 3 inches : 1 feet,
That is, for 3 inches the measurement is 1 feet
We know that,
1 feet = 12 inches,
⇒ For 3 inches the measurement is 12 inches,
Thus, the scale factor = [tex]\frac{\text{Final measurement}}{\text{Initial measurement}}[/tex]
[tex]=\frac{12}{3}[/tex]
[tex]=4[/tex]
Hence, the scale factor is 4.
