What is the weight of a 2 ft by 2 ft by 2 ft block of concrete?

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Multiple Choice

What is the weight of a 2 ft by 2 ft by 2 ft block of concrete?

Explanation:
Weight comes from volume times the concrete’s unit weight. The block is 2 ft by 2 ft by 2 ft, so its volume is 2 × 2 × 2 = 8 cubic feet. Normal concrete weighs about 150 pounds per cubic foot. Multiply: 8 × 150 = 1200 pounds. So the block weighs about 1200 pounds. If you compare the other numbers, they don’t fit the 8 ft^3 volume with standard concrete density: 600 would imply only 4 ft^3 at 150 pcf, 1800 would require 12 ft^3 at 150 pcf (or the same volume with denser material), and 2400 would need 16 ft^3, etc.

Weight comes from volume times the concrete’s unit weight. The block is 2 ft by 2 ft by 2 ft, so its volume is 2 × 2 × 2 = 8 cubic feet. Normal concrete weighs about 150 pounds per cubic foot. Multiply: 8 × 150 = 1200 pounds. So the block weighs about 1200 pounds. If you compare the other numbers, they don’t fit the 8 ft^3 volume with standard concrete density: 600 would imply only 4 ft^3 at 150 pcf, 1800 would require 12 ft^3 at 150 pcf (or the same volume with denser material), and 2400 would need 16 ft^3, etc.

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