To find the area of a rectangle, you multiply the length by the width. In this case, the length is 21 feet and the width is 17 feet. Therefore, the area of the floor is 357 square feet (21 feet x 17 feet = 357 square feet).
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21 feet by 21 feet is a square having an area of 441 square feet.
21*21 = 441 square feet.
588Square feet is area, and area of a rectangle = LWtherefore, A=28x21A=588
Area = Length * Width 21 * 40 = 840 Square Feet
The area of a parallelogram is calculated by multiplying the length of the base by the height. In this case, the base is 3 feet and the height is 7 feet. Therefore, the area of the parallelogram is 3 feet * 7 feet = 21 square feet.