What is the weight of a 3 ft by 3 ft by 3 ft block of concrete?

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Multiple Choice

What is the weight of a 3 ft by 3 ft by 3 ft block of concrete?

Explanation:
Weight is found by multiplying the material’s density by its volume. The block’s volume is 3 ft × 3 ft × 3 ft = 27 cubic feet. Concrete commonly weighs about 150 pounds per cubic foot, so the weight is 27 × 150 = 4,050 pounds. This matches the given correct choice. If a different density were assumed, the weight would change accordingly; the other options would require densities far from typical concrete.

Weight is found by multiplying the material’s density by its volume. The block’s volume is 3 ft × 3 ft × 3 ft = 27 cubic feet. Concrete commonly weighs about 150 pounds per cubic foot, so the weight is 27 × 150 = 4,050 pounds. This matches the given correct choice. If a different density were assumed, the weight would change accordingly; the other options would require densities far from typical concrete.

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