Question 7 1 pts The following pyramid has height 4 and a square base of side length 2. It is positioned, so that its vertex is at the origin, and its altitude lies on the m-axis. 2 What is the function A[:1':} . representing the area of a cross section at 1:? {See Example 1 on pages 3159-3730.] 0 _ Ac] 2 O Aka] = 2:112 C) _ at\" D _ 2:2 Question 8 1 pts Find the volume of the solid obtained by resolving the region between the m-axis and the curve 1;: 1 :32 around the m-axis. Round your answer to two decimal places. llHints: Are the cross sections disks or washers? What is the area of a cross section at m?) S Question 9 1 pts What is the area of the following washer (i.e., the shaded/orange region)? 6 O 16T 28T O 32TT O 4T O 5TT