The square on the right is a scaled copy of the square on the left. Identify the scale factor. Express your answer as a fraction in simplest form.
63 x 63
86 x 86
To find the scale factor, we can divide the corresponding side lengths of the two squares.
Scale factor = (86/63) = (2*43/3*21) = 43/21
Therefore, the scale factor is 43/21.