help me solve these math problems

If 1900 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box. Volume = cubic centimeters. Submit Question 0 Question 32 v A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 30 feet? ' ft2 Submit Question 0 Question 33 V Find the point on the curve 3; = \\/7:1; + 3 which is closest to the point (7, 0). 0 Question 34 v A rectangle is inscribed with its base on the X-axis and its upper corners on the parabola y = 7 1:2. What are the dimensions of such a rectangle with the greatest possible area? Question Help: El Video Submit Question . Question 35 V A rancher wants to fence in an area of 500,000 square feet in a rectangular field and then divide it in half with a fence down the middle parallel to one side. What is the shortest length of fence that the rancher can use? Submit