Find Pappus's Theorem for Volume in your text. It turns out, he went farther than that (still without calculus) and also found a formula for Surface Area which is S = 27pL where p is distance from the axis of revolution to the centroid and L is the length of the arc times the distance traveled by the arc's centroid during the revolution. Demonstrating the use of these theorems find the volume and the surface area of the torus found by revolving a circular disk of radius a about an axis in the its plane at a distance b≥ a from its center. (Include your best labeled picture here.)

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