You can calculate the area of a triangle if you know the lengths of all three sides using a formula that has been known for nearly 2000 years. Online Education - comprehensive directory of online education programs and college degrees. It is called Herons Formula after Hero of Alexandria see below Just use this two step process.
In geometry A triangle is shape whose three sides are all the same length.
Since each side of a square is the same it can simply be the length of one side squared. Since three measurements are involved volumes will be given in cubed units. The Volume of a figure measures what the figure holds when filled even with air. Area by Counting Squares.