Find the resistance for a truncated cone made of copper with a conductivity of o Figure 2. Assume a 0.1 [m], b=0.3 [m], and h = 0.5 [m]. = 5.998 x 107 [S/m] shown in Hint: First, consider a circular disk shown in Figure 2-b as a differential element. Find its resistance dR in terms of the radius of the disk r, and its thickness dz. Secondly, find a relationship between r, and z. Finally, integrate dR to find the resistance of the cone. + a 2 b (b) (a) Figure 2: A cone made of copper, a) 3-D view, b) 2-D Cross-section. dz