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A cement bridge post is 24 inches square and 15 feet 9 inches in length. If the cement weighs 145 pounds per cubic foot, how much does one bridge post weigh? A. 9,280 pounds B. 9,222 pounds C. 9,135 pounds D. 8,700 pounds

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Answer:

No options are correct.

Explanation: ┬аDensity = Mass / Volume ┬аHere density of concrete = 145 pounds per cubic foot ┬аVolume = Area * Length of post ┬аA cement bridge post is 24 inches square = ┬а Length of post = 15 feet 9 inch = 15.75 feet ┬аVolume of post = 0.1667 * 15.75 = 2.63 ┬аWeight of concrete post = 145* 2.63 = 380.63 pounds.

No options are correct.


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