A tank with internal dimensions of 40 feet X 20 feet X 12 feet is pressed with fuel oil weighing 54 pounds per cubic foot. What is the weight, in short tons, of the liquid?
• Volume of a rectangular tank (length × breadth × depth) • Converting cubic feet to total weight using pounds per cubic foot • Converting pounds to short tons (1 short ton = 2000 lb)
• First, how do you calculate the total volume of the tank in cubic feet using the given dimensions? • Once you have the volume, how do you use the fuel oil’s weight per cubic foot to find the total weight in pounds? • After finding total pounds, what conversion factor must you apply to express that weight in short tons?
• Be sure you multiply all three dimensions to get volume in cubic feet • Check that you used 54 lb per cubic foot only once (don’t multiply it twice by mistake) • Confirm you divided by 2000 lb per short ton to get the final answer in the correct unit
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