An insulated pad is shaped like a truncated pyramid has heat conducting through it in the x direction. The temperature on the surface of the 10cm x 10cm side is 650K and the temperature on the surface of the 5cm x 5cm side is 295 K. The height of the pad is 15 cm. Assume that the side of the square surface area changes linearly between x =0 and x = 15 cm. The trapezoid shaped sides are insulated. Assume 1 directional heat transfer, in x direction