A cylindrical tank measures 10 feet in...

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Question 1 of 205eccefa2bacbc34ba4d477a7

A cylindrical tank measures 10 feet in diameter and 20 feet in length, weighs 4 long tons when empty. When completely filled with a petroleum product having an API gravity of 35.5 at 60°F, what is the total weight of the tank and its contents in long tons? See illustration GS-0149.

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🔍 Key Concepts

• Volume of a cylinder in cubic feet using diameter and length • Conversion from cubic feet to U.S. gallons and then to weight in pounds using the GS-0149 table • Final conversion from pounds to long tons (2,240 lb) and adding the empty tank weight

💭 Think About

• How do you compute the internal volume of a cylindrical tank from its diameter and length, and express that volume in cubic feet? • Once you know the volume in cubic feet, how many U.S. gallons is that, and what does the GS-0149 table tell you about pounds per gallon at an API gravity of 35.5? • After you get the total pounds of liquid, how do you convert that to long tons and then combine it with the 4 long tons of the empty tank to compare with the answer choices?

✅ Before You Answer

• Be sure you use radius, not diameter, in the cylinder volume formula (V = \pi r^2 L) and keep units in feet. • Confirm you use the correct pounds per U.S. gallon value from GS-0149 for API 35.5 at 60°F (you may need to judge whether interpolation is necessary). • Remember that 1 long ton = 2,240 lb, and that you must add the tank’s 4 long tons to the liquid weight before matching to the multiple-choice options.

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