SOLUTION: A rectangle has a perimeter of 336 square inches. The length is 21 inches long. Find the width

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Question 746423: A rectangle has a perimeter of 336 square inches. The length is 21 inches long. Find the width

Found 3 solutions by stanbon, Cromlix, tommyt3rd:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website!
A rectangle has a perimeter of 336 square inches. The length is 21 inches long. Find the width
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Note: Perimeters do not come in square inches.
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Cheers,
Stan H.

Answer by Cromlix(4381)   (Show Source):
You can put this solution on YOUR website!
A perimeter would be measured in inches not
square inches.
I think you mean an area of 336 sq. inches.
Area of a rectangle = l x b
Therefore the width (breadth) = Area/length
= 336/21 = 16 inches.
If you mean that the perimeter = 336 inches
and you have a length of 21 inches then you would double
21 = 42 inches. Subtract 42 inches from 336 inches and divide
by two = 147 inches for the width.
A perimeter consists of two lengths and two widths
in a rectangle.

Answer by tommyt3rd(5050)   (Show Source):
You can put this solution on YOUR website!
First note that perimeter is measured in inches, and here is the formula for the perimeter of a rectangle:

P=336, l=21

so...

divide by 2...

w=168-21=147
width is 147 inches

:)