Question

The width of a picture is 20 cm. Using a color copier, you reduce the width of the picture to 4 cm. What is the scale factor of the dilation?

Answer 1

The scale will simply be:\[\frac{newsize}{oldsize}=\frac{4cm}{20cm}=?\]

Answer 2

(hint: simplify the fraction and put it in the form of numerator:denominator)

Answer 3

thanks