For this case, what we must do is find the scale factor.
We have then that the scale factor is given by:

Where,
L1: side length of polygon ABCD
L2: side length of polygon PQRS
Note: both sides belong to the same side of each polygon
Substituting the values we have:

Rewriting we have:
Answer:
The scale factor of dilation is given by:
Cross multiplication
or multiplying by a number which goes in both rates
Answer:
6 square units
Step-by-step explanation:
Given shape is of a trapezoid:

Area of shape = area of square + area of triangle

Answer: 829 3/4 or 829 75/100
Step-by-step explanation:
These are the same line when you graph. So there are infinite solutions to this system.