To find the area of a rectangle, you multiply its length by its width. In this case, the length is 12 feet and the width is 3 feet. Multiplying 12 by 3 gives you 36 square feet. Therefore, the area of a rectangle with dimensions 3 feet by 12 feet is 36 square feet.
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3.472 square feet.
784 square feet
There are 43560 square feet.
7,500 square feet.