Multiply the length by the width, and you will get your area.
For example... a standard piece of paper has two long sides, and two short sides. The two short sides are exactly the same length, and the two long sides are exactly the same length.
The length of a long side is 11 inches and the length of a short side is 8.5 inches.
To find the area you would multiply 11x8.5 which equals 93.5. Your area would then be 93.5 square inches.
The equation is l*w=a
l being length
w being width
a being area
this equation will work for any squares or rectangles!
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You need to know the length and width of the desk before you can determine the area. Multiply the length by the width to get your answer (length x width = area).
Square root the area. The length and width of a square are always the same and length times width is the area so this is how you get the area.
The area does not provide sufficient information to determine the length, width and height.
Area = length x width Length = area/width
The length and width of a parallelogram, as normally measured, does not provide enough information to determine its area.