How to state whether the side lengths are possible. why or why not?

This is a 30-60-90 triangle. We know this because there is a right angle (90°) and 60° is given to us. The rule for a 30-60-90 triangle side lengths is x, x√3, and 2x for the hypotenuse.

Therefore, these side lengths are not possible because it does not fit the 30-60-90 triangle side rule.

i think the amount would be $140.62

where is the graph? need more info