1. The graph of a function y = √16-(x-5)2 + 3 is given below: Approximate the area under the graph from [0,8] using 4 evenly spaced trapezoids. 4 2. A square-base pyramid has base length x ft and height h. a. Write down an expression for the surface area of the pyramid. b. The surface area of the pyramid is 20 ft². Find an expression for h in terms of x. c. Find an expression for the volume of the pyramid, V(x), in terms of x. d. i. Find V'(x) ii. Hence, find the value of x which maximizes the volume of the pyramid.