please kindly include a sketch in question 6

Question 5 [5 marks] A closed-topped rectangular box with a square base has volume 800cm3. X X Find the dimensions (r and y) that minimizes the total surface area of the box. Question 6 [5 marks] A cone-shaped funnel is being filled with water at a rate of 0.001cm3/s. The height of the funnel is 3m and the radius at the top of the funnel is 1.5m. Find the rate at which the radius of the water is changing when the height of the water in the funnel is 0.5m