Metal Star A copper three-dimensional star that is 36 in. wide is hanging in a wall,...

Metal Star A copper three-dimensional star that is 36 in. wide is hanging in a wall, as shown in the accompanying figure. The perimeter if the star is flush against the wall, but the center point is 3 in. from the wall. The star is made from 10 triangular pieces of copper. Find the lengths of the three sides of one of them to the nearest hundredth of an inch.