Find the surface area of the rectangle of the change box that is 9 m, 24 m, 11 m.

The full surface of a rectangular parallelepiped is equal to the sum of all its faces, of which it has 6 pieces.

Of these, 2 are the same:

We find the area of the lower and upper faces, which are equal:

9 * 24 = 216.

We find the area of the side face, which is equal to the area of its opposite:

9 * 11 = 99.

We find the area of the other side face, which is also equal to the area of its opposite:

24 * 11 = 264.

Find the full surface of the parallelepiped:

V = 216 * 2 + 99 * 2 + 264 * 2 = 432 + 198 + 528 = 1158.

Answer: The total surface of a parallelepiped is 1158 m2.