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Question 1 10 pts a A hydraulic power requires the oil cooling from a temperature of 90°C and it is proposed to utilise a tubular heat exchanger design with a tubing of diameter of 0.03m to using water as the coolant in a counter flow arrangement. The hydraulic oil flows a rate of 10kg/min and the oil temperature requires reducing to 40°C. The cooling water flows at a rate of 10kg/min with an inlet temperature of 10°C. The overall heat transfer coefficient will be 0.7kW/m².K. and the specific heat capacity (Cp) of the hydraulic oil and water can be assumed to be 1.8 kJ/kg.K and 3.993kJ/kg.K respectively. Calculate the length of the require tube. Input your answer to one decimal places in m (DO NOT INCLUDE UNITS IN YOUR ANSWER)