dorianshockelas dorianshockelas

23-10-2018
Mathematics

contestada

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?

Respuesta :

mathstudent55 mathstudent55

23-10-2018

Answer:

9,135 lb

Step-by-step explanation:

24 inches = 2 ft

12 in = 1 ft

9 in = 0.75 ft

volume = 2 ft * 2 ft * 15.75 ft = 63 ft^3

63 ft^3 * 145 lb/ft^3 = 9,135 lb

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