I need help answering these questions.

1) Rectangular piece of metal 6in x 10in from each corner cut out of a square x" by x" and fold up the box to make a rectangular solid open box. a) Create volume function b) Find max to the nearest tenth 2) An open box is to be formed by cutting squares from a square sheet of metal 10cm on a side and then folding up the sides. a) Create an equation that represents the volume b) Find the domain c) Find the max. volume to the nearest tenth