G. A lamina occupies the region in the first quadrant enclosed by the graphs of 2x = y, x + y = 4 and the x-axis. Set up (do not evaluate) the iterated double integral that gives the mass of the lamina if the density at any point (x, y) on the lamina 8(x, y) = xy. kT H. According to the Ideal Gas Law, the pressure P, temperature T, and volume V of a confined gas are related by P = where k is a constant. Use differential to approximate the percentage change in pressure if the temperature of a gas is increased 3% and the volume increased 5%.