b) An elevator consists out of thin aluminum rods that are pin-connected to each other. The elevator is placed in a cylinder and on top of the elevator is a platform. At room temperature, the rods have a length of 0.3m (= the distance between the hinges) and the angle between the rods and the horizontal axis is 30. An electric current that passes through the rods increases the temperature of the rods with 80C. What difference in height of the platform is created in this way? TKX