Solve Problem 15.1 if the asbestos pad has a 1.905-cm steel bolt running through its center

Data From Problem 15.1

An asbestos pad is square in cross section, measuring 5 cm on a side at its small end, increasing linearly to 10 cm on a side at the large end. The pad is 15 cm high. If the small end is held at 600 K and the large end at 300 K, what heat-flow rate will be obtained if the four sides are insulated? Assume one dimensional heat conduction. The thermal conductivity of asbestos may be taken as 0.0173 W/m · K.