the perimeter of the rectangle is 86 inches. if the length is 3 inches longer that the width, find the width of a rectangle.
2 answers:
The length is 23in and the width is 20 inches
Answer:
Width = 20 inches
Step-by-step explanation:
Perimeter = 86 inches
Width = W
Length = 3 + W
Use the formula 2L + 2W = P to solve
Substitute new value for length (3 + w) into the formula
2(3 + W) + 2W = P
Change perimeter into the equation to 86 inches (Given)
2(3 + W) + 2W = 86
Multiply
6 + 2W + 2W = 86
Add the W's
6 + 4W = 86
Subtract 6 from both sides of the equation
4W = 80
Divide both sides of the equation by 4
W = 20 inches
Hope this helps :)
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