First of all, there is no reason to suppose that the area is rectangular as opposed to circular or triangular or some other simple or complicated shape. Even if, on the basis that the question asks for length and width, you assume that it is a rectangle, there are infinitely many possible answers: ranging from a nearly square area to an extremely long, very thin strip: for example 18 kilometres long and 1 millimetre wide.
That's wrong; 18 inch is not a unit of area. In general, since in a square the length and width are the same, you take the square root of the area, to get the length of a side.
There's no way to know. There are an infinite number of length/width combinations that all have the same area, and just knowing the area doesn't tell you which one it is.
28*18 = 504 square units
324 square feet. Multiply length by width - the result is the area in square feet.
Length: 4; Width: 5 or Length: 5; Width: 4
Area of a square or rectangle = length x width Therefore as the length and width both equal 18ft the equation would be: 18 x 18 = 3242ft
That's wrong; 18 inch is not a unit of area. In general, since in a square the length and width are the same, you take the square root of the area, to get the length of a side.
There's no way to know. There are an infinite number of length/width combinations that all have the same area, and just knowing the area doesn't tell you which one it is.
28*18 = 504 square units
324 square feet. Multiply length by width - the result is the area in square feet.
306 square feet. Multiply length by width - the result is the area in square feet.
Length: 4; Width: 5 or Length: 5; Width: 4
A rectangle with one side that is double the length of the other side can be seen as two squares beside each other, that are half the area of the original rectangle, in this case 18 square inches / 2 = 9 square inches. The side of a square is the square root of the area, in this case the square root of 9 square inches, which is 3 inches. Now think about the rectangle again. What we just counted was the side of a square that made up one half of the rectangle you wanted to calculate the area of. So the shorter side of the rectangle is the same as our square, and the longer side is double the length. So the width of the rectangle is 3 inches, and the length is 2 * 3 inches = 6 inches. Or: Area = length x width (A=lw) Area = 18 (in2) Width = w Length = twice width (2w) 18 = (2w)w 18 = 2w2 9 = w2 3 = w The width is 3 in., the length (2w) is 6 in.
324 square feet. This is an easy calculation - just multiply the length by the width. The answer is the number of square feet.
Multiply width by length to get the area. The answer would be 216 square yards.
432 square feet. Just multiply length by width - the answer is the square footage.
The square footage of a 20x18 room is 360 square feet. This can be calculated by multiplying the length (20 feet) by the width (18 feet).