The length of a rectangle is 3 units greater than its width. Which expression would correctly represent the perimeter of the rectangle?
A. 2W+2[W+3]
B. W+W+3
C. W[W+3]
D. 2W+2[3W]
Let width of the rectangle be W. We are told that length, L is 3 units greater than width. Then,
L=W+3
And perimeter of the rectangle is given by the relation, P=2(L+W]=2L+2W
In place of L substitute W+3. Thus,
P=2[W+3]+2W
Therefore, the Correct Answer is A.
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