What is the maximum value of the function? Explain with the maximum value represents in this situation?

If the rectangle has a length of 3.6 inches, and a perimeter of 16.8 inches, the width will be 4.8, which we can work out by taking away the amount we already know from the perimeter, which will of course be 3.6 x 2 (7.2) to get 9.6. This is the combined length of the remaining widths within the perimeter added together, so to find the width along, you simply need need to halve 9.6 to get 4.8.