A rectanglar parallelepiped with square ends has 12 edges and six surfaces. If the sum of all edges is 176 cm and the total surface area is 1288 cm^(2)

Find:

A) the length of the diagonal of the parallelpiped (shown as bold line in figure)

B) the angle the diagonal makes with the base (two answers are possible)

Picture of figure is linked below

Thank You:)