A object with density 150 lb per cubic foot and dimensions 4 ft by 3 ft by 3 ft weighs approximately

A object with density 150 lb per cubic foot and dimensions 4 ft by 3 ft by 3 ft weighs approximately

• A. 2,160 lbs
• B. 3,600 lbs
• C. 5,400 lbs
• D. 7,200 lbs

Answer: (C)

Weight comes from multiplying density by volume. The object’s density is 150 pounds per cubic foot, and its volume is 4 ft × 3 ft × 3 ft = 36 cubic feet. Multiply 150 by 36 to get 5,400 pounds. So the object weighs 5,400 pounds. The other options would require a different volume than the 36 cubic feet produced by these dimensions.

Weight comes from multiplying density by volume. The object’s density is 150 pounds per cubic foot, and its volume is 4 ft × 3 ft × 3 ft = 36 cubic feet. Multiply 150 by 36 to get 5,400 pounds. So the object weighs 5,400 pounds. The other options would require a different volume than the 36 cubic feet produced by these dimensions.