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Mathematics 11 Online
OpenStudy (anonymous):

A tank open on top, is made of a sheet iron 25mm thick. The internal dimension of the tank are 1.4m long; 1.05m wide; and 1.3m deep. Find the weight of the tank when empty, and find the weight of the tank when full of salt. (The unit weight of salt water is 1027kg/m^3 and that of steel is 7400kg/m^3)

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