The width of rectangle is less than the length. Find the dimension of the rectangle if the area is 396 square meter
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"The width of a rectangle is 4 meters less than its length, and the perimeter is 28 meters. Find the length and width of the rectangle."
"The width of a rectangle is 4 meters less than its length, and the perimeter is 28 meters. Find the length and width of the rectangle."
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Donald Q. answered • 09/18/15
Let's see if we can do this nice and tidy, lining everything up (hopefully won't have to come back and edit a million times to line up).
perimeter = L + W + L + W = 28
W = L - 4
L + (L - 4) + L + (L - 4) = 28
L + L - 4 + L + L - 4 = 28
4L + (2)(-4) = 28
4L - 8 = 28
+ 8 = + 8
---------- ------
4L = 36
4L 36
---- = ----
4 4
L = 9
Now that you know the length, can you find the width?
_ _ _ _ _ _ _ _ _
| 9 |
| |
| 5 |
|
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