Question

what is the scale factor of figure b to figure a?

Explanation:

Step1: Recall the formula for scale factor

Scale factor \(=\frac{\text{Length in Figure B}}{\text{Length in Figure A}}\)

Step2: Choose corresponding sides

Let's use the sides \(8.6\) (Figure B) and \(21.5\) (Figure A)

Step3: Calculate the scale factor

\(\frac{8.6}{21.5}=\frac{86}{215}=\frac{86\div43}{215\div43}=\frac{2}{5} = 0.4\)

Answer:

\(0.4\)