Question

What is the scale factor used to enlarge rectangle A to rectangle B

Answer 1

Observe the given diagrams carefully.

Scale factor is a concept used in dilation of figures.

Here the dilated figure is a rectangle.

So the scale factor is defined as the ratio of their linear measurements.

Then the scale factor (SF) of rectangle A to rectangle, will be given by the ratio of any linear measurement of rectangle A to the corresponding linear measurement of rectangle B,

$SF=\frac{6}{30}=\frac{6}{5\times6}=\frac{1}{5}$

Thus, the required scale factor is 1/5 or 0.2.