there is no length or width of a circle. There is radius and circumference and the line that goes all the way through the center to the other side of the circle, which is twice the radius. But there is no length or width of a circle.
The width, or the length of a circle are its diameter.
length x width
You multiply the length by the width.
Square feet is a measure of area. To figure out how many square feet there are in a square or rectangle, you would simply multiply the width by the length.For example, if the width is 5ft and the length is 7 ft, then the area would be 5x7 = 35 square feet.
Assuming there is no border around the circle, then doubling the radius will give the length and width of a square (28 x 28 = 784cm2). The problem in your question is that you state it is a rectangle. Which means that the rectangle must be longer in length then width!
The width, or the length of a circle are its diameter.
What a strange question. A circle does not have a length or a width. It has a diameter and that all.
measure it
For a circle, the length and width are the same: from one side of the circle to the opposite point is the same value. The diameter is the longest possible length of any line connecting two points on the circle. This differs from a square or rectangle, where the length or width is not the longest line, but rather the diagonal from opposite corners.
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).
length x width
multiply the width by 2 and then subtract that to the perimeter then divide the answer by 2 to get the length
measure them.
Radius
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.
Given what? Probably measure it
You cannot: given only the volume, there is no way to determine the length, or width or height. If you double the length and halve the width you would still have the same volume.