Reza is helping En Shah to make a box without the top.The box is made by cutting away four squares from the corners of a 30cm square piece of cardboard as shown in Figure 1 and bending up the resulting cardboard to form the walls of the box.

Answer 1

The volume is x(30-2x)^2

The area is (30-2x)^2 + 4x(30-2x)

Answer 2

sTEVE I CANT UNDERSTAND

Answer 3

Neither can I. You never asked a question.