<em>Testing only one variable at a time lets you analyze the results of your experiment to see how much a single change affected the result. If you're testing two variables at a time, you won't be able to tell which variable was responsible for the result.</em>
The maximum length of each of the three sides is 13.5 feet.
<h3>What is a trapezoid?</h3>
A trapezoid is a convex quadrilateral. A trapezoid has at least on pair of parallel sides. The parallel sides are called bases while the non parallel sides are called legs.
Perimeter = sum of lengths of sides of a trapezoid
<h3>What is the maximum length of each of the three sides?</h3>
