www.calculatorsoup.com/calculators/construction/square-footage-calculator.php

www.squarefootage.org/square-footage-calculator.php

Directions: Enter any combination of feet and/or inches into the calculator below.
You can use this

www.calculator.net/square-footage-calculator.html

www.reference.com/math/formula-calculate-square-feet-79f0faa2b54fdc0a

The

www.thecalculatorsite.com/misc/square-footage-calculator.php

Use this

www.mathway.com/examples/algebra/algebra-concepts-and-expressions/solving-using-the-square-root-property?id=1075

en.wikipedia.org/wiki/Quadratic_equation

In elementary algebra, a quadratic

www.homeschoolmath.net/teaching/square-root-algorithm.php

Explanation of three ways to find