Knowing the area doesn't tell you the dimensions. There are an infinite number
of different rectangles with different dimensions that all have 21 square-ft area.
Here are a few:
Length x Width, ft
1 x 21
1.5 x 14
2 x 10.5
2.4 x 8.75
2.5 x 8.4
3 x 7
3.5 x 6
4 x 5.25
4.2 x 5
14.734375
The length of the rectangle is 20 ft. The area of the rectangle is 11 * 20 = 220 square ft.
2 ft
In a rectangle, the opposite sides are equal, so two sides are 11 ft and the other two are 21 ft. To find the perimeter of a rectangle, you only have to add up all sides. So it's 11 + 11 + 21 + 21 = 64 ft
12' x 10'
14.734375
The length of the rectangle is 20 ft. The area of the rectangle is 11 * 20 = 220 square ft.
The area of rectangle is : 120.0
2 ft
In a rectangle, the opposite sides are equal, so two sides are 11 ft and the other two are 21 ft. To find the perimeter of a rectangle, you only have to add up all sides. So it's 11 + 11 + 21 + 21 = 64 ft
12' x 10'
20 ft
To find the area of a rectangle, you multiply its length by its width. In this case, the rectangle is 6 feet long and 4 feet wide. So, the area would be 6 ft x 4 ft = 24 square feet.
A perimeter is not enough to determine the area. A 4000 ft perimeter could be a circular shape with radius giving an area of 1,273,000 sq ft (approx) = 29.23 acres. It could be a 1000 ft * 1000 ft square with an area of 1,000,000 sq ft = 22.96 acres or a 500 ft * 1500 ft rectangle with an area of 750,000 sq ft = 17.22 acres or a 100 ft * 1900 ft rectangle with an area of 190,000 sq ft = 4.36 acres or a 10 ft * 1990 ft rectangle with an area of 19,900 sq ft = 0.46 acres or a 1 ft * 1999 ft rectangle with a n area of 1,999 sq ft = 0.05 acres or a 0.1 ft * 1999.9 ft etc. As you might guess from the above, by reducing one dimension the area of the parcel of land can be reduced without limit although the perimeter is left unchanged.
9.8 x 5 = 49 square feet is the area of the rectangle.
The length of the rectangle that has the area of 120 ft and the width of 8 ft is 960 ft that is the correct answer 960 ft
27:55