I need help solving this.

' 1 Suppose an aidine policy states that all baggage must be box-shaped with a sum of length, width. and height not exceeding 6' Y 90 in. What are the dimensions and volume of a squarebased box with the greatest volume under these conditions? i ; Write a function for the volume V of the box in terms of w, one of the edges of the square bottom. 9:1 (Type an expression.) ' (Simplify your answer. Type your answer in Interval notation.) ' The interval of interest of the objective function is El. 1 ii The length of the square-end edge is E] in. The box height is D in. The greatest volume of the box is E] in3