Question

1. what would be the actual length, if the length of the model is 25 ft and the scale factor is lesser than one?

a) 20 ft
b) 25 ft
c) 30 ft

Explanation:

Step1: Recall scale - factor formula

The formula for scale factor $k=\frac{\text{model length}}{\text{actual length}}$. Given $k < 1$ and model length $= 25$ ft. So, $\text{actual length}=\frac{\text{model length}}{k}$. Since $k<1$, when we divide 25 by a number less than 1, the result is greater than 25.

Answer:

c) 30 ft