The length of a rectangle is 3 inches more than its width, and its perimeter is 22 inches. Find the width of the rectangle
one thing that may help is the use of diagrams. See the attached photo.
To solve you need two equations.
2w + 2L = 22
L = w + 3
2w + 2(w + 3) = 22
2w + 2w + 6 = 22
4w + 6 = 22
4w = 16
w = 4
L = w + 3
L = 4 + 3
L = 7
The width of the rectangle is 4 inches.
The formula for the perimeter of a rectangle is, P = length + breadth + length + breadth.= 2(length+ breadth)
Given: perimeter= 22 inches.
Let the width be 'b'
length= b+3
Perimeter of rectangle= 2(l+b)
22 = 2(b+3+b)
11= 2b+3
11-3=2b
8=2b
b=4 inches
So, length= b+3= 7 inches
Hence, the width of rectangle is 4 inches.
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