= A lampshade is constructed by rotating y lampshade - that is, the surface area. Area: around the x-axis from x = 1 to x = 2. Determine how much material you would need to construct this units squared help (numbers) Find the surface area of the solid generated when the curve y = cos(x), from x = 0 to x = /2, revolves around the y-axis. If you cannot evaluate the integral exactly, use technology to approximate it. units squared. help (numbers) Surface Area: