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A material of resistivity %u03C1 is formed into the shape of a truncated pyramid of altitude 3a as shown in Figure below. The bottom end has sides =4a, and the top end has sides=2a. Assume that the current is distributed uniformly over any circular cross section of the pyramid, so that the current density does not depend on radial position. Find the resistance of the wire in terms of %u03C1 and a

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