Suppose you make napkin rings by drilling holes with different diameters through two wooden balls (which also have different diameters). You discover that both napking rings have the same height h. Guess which ringhas more wood in it. Then use the shell method to compute the volume of a napking ring created by drilling a hole with radius r through the center of a sphere of radius R and express the answer in terms of h. Finally find the amount of wood in two different napkin rings: one with h=2in, r=.5in ,and R=1.5in. and the second napkin ring with h=2in, r=.75in, and R=2

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.