can you please do a explanation on how the variable are optimised in each case.

9 A company is required to fence off the area around a robot arm to comply with health and safety law. They have 750m of fencing available The task is to: a) Find the maximum area they can fence off? 10 You plan to make a simple, open topped box from a piece of sheet metal by cutting a square - of equal size - from each corner and folding up the sides as shown in the diagram: If 1=200mm and w=150mm calculate: a) The value of x which will give the maximum volume b) The maximum volume of the box c) Comment of the value obtained in part b. Your informal report should contain: analysis worked solutions to the problems Each worked solution should be laid out clearly and contain brief explanations of the stages of the calculation to indicate your understanding of how calculus can be used to solve an engineering problem. You explanation should be detailed in response to questions 9 and 10 to show how the variables are optimised in each case. Graphs should be well presented and clearly labelled and comparisons between methods should be accurate and well presented