SOLUTION:
Case: Scale factor
Method:
A pair of similar trapezoids with areas 81cm squared and 49cm squared
a) The area scale factor is: 81: 49
The linear scale factor is the square root of the area scale factor
[tex]\begin{gathered} \sqrt{\frac{81}{49}} \\ =\frac{9}{7} \end{gathered}[/tex]The Linear scale factor is 9:7.
b) The since the perimeter is also linear, the ratio of the perimeter is also: 9:7
