A sheet of aluminum with a rectangular shape is attached to a vertical support by a set of hinges. Assume the sheet is uniform and has height 2.30 m, width 0.895 m, and mass 24.5 kg. Requried:
a. Determine its moment of inertia (in kg m^2) for rotation on its hinges.
b. Are any pieces of data unnecessary? (Select all that apply.)

1. The height of the sheet is unnecessary.
2. The mass of the sheet is unnecessary.
3. The width of the sheet is unnecessary.
4. No; all of the data are necessary.