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 = \(\frac{\text{Final measurement}}{\text{Initial measurement}}\)
\(=\frac{12}{3}\)
\(=4\)
Hence, the scale factor is 4.
