Question

Two wires are connected by stakes from the ground to the top of a

vertical pole that is anchored halfway between the stakes. Each
wire is 11 feet long, and the stakes are 20 feet apart. What
is the height of the pole? Express your answer in simplest
radical form.

Answer 1

The answer is the square root of 21. This is simplest form because the only factors of 21 are 1, 3, 7, and 21 and they all aren't perfect squares.