A square high-density polyethylene [alpha = 158 times 10^-6/degree C] plate has a width of 300 mm. A 180 mm diameter circular hole is located at the center of the plate. If the temperature of the...

A square high-density polyethylene [alpha = 158 times 10^-6/degree C] plate has a width of 300 mm. A 180 mm diameter circular hole is located at the center of the plate. If the temperature of the plate increases by 40 degree C, determine: the change in width of the plate. the change in diameter of the hole