A 10 mm thick steel plate with dimensions of 10 x 10 cm and a density of 7.85 g/cm was submerged in seawater for a period of 1 year. During this period the weight of the plate reduced by 20 grams. Kw CPR = pAt where corrosion penetration rate (CPR) is measured in mm/yr, weight loss in mg, density in g/cm, A in cm, t in hours and K as a constant equal to 87.6. Assume there are 365 days in the year. Using the information, determine: a) the CPR b) the maximum total submerged time the plate could continue to be submerged before the thickness is reduced to 8 mm. Give your answer in years.