Andy bought a box of cookies that matches the dimensions of the solid below. How many square units of cardboard were used to construct the box?
If your solution is not a whole number, round to the nearest tenth.

A right triangular prism. The base of the triangle is 3 centimeters, and the height of the triangle is 4 centimeters. The hypotenuse is 5 centimeters. The prism height is 5 centimeters.