Question

a scale drawing that measures 8 units wide and an original that measures 4 units wide has a scale factor of
○ bigger
○ 2:1
○ 8:1
○ 1:2

Explanation:

Step1: Recall scale factor formula

Scale factor = $\frac{\text{Scale drawing measurement}}{\text{Original measurement}}$

Step2: Substitute values

Scale factor = $\frac{8}{4}=2 = 2:1$

Answer:

B. 2:1