some car jacks are constructed like a collapsed rhombus. when used to raise a car, the rhombus is easily seen. if all sides are the rhombus are 10 inches, what is the maximum length of the shaft?

It's important to know that a rhombus is a parallelogram with all equal sides. Additionally, the diagonals are perpendicular, and they bisect each other. Also, the diagonal has a double length of one side
[tex]d=2\cdot10=20[/tex]