A quart is approximately sixty cubic inches. A cu. ft of water weighs approximately sixty pounds. Therefore, a quart of water weighs, approximately,
A. 2 lbs.
B. 3 lbs.
C. 4 lbs.
D. 5 lbs.
To determine the weight of a quart of water, we need to convert the volume of the quart to cubic feet, and then multiply it by the weight of a cubic foot of water.
Step 1: Convert quart to cubic feet
Since a quart is defined as 60 cubic inches, we need to convert this volume to cubic feet.
1 cubic foot = 12 inches x 12 inches x 12 inches = 1728 cubic inches
Therefore, 60 cubic inches = 60/1728 cubic feet = 0.03472 cubic feet
Step 2: Multiply by the weight of a cubic foot of water
Given that a cubic foot of water weighs approximately 60 pounds, we can now calculate the weight of a quart of water.
Weight of a quart of water = 0.03472 cubic feet x 60 pounds = 2.0832 pounds
Rounding this to the nearest pound, we can conclude that a quart of water weighs approximately 2 pounds.
Therefore, the answer is A. 2 lbs.
(60 / 12^3)*60 = 2.08
But then, we already knew that, since "a pint's a pound, the world around."