Question

The length of a rectangle is 9 inches and its perimeter is 48 inches. What is the width of the rectangle?
A. Let x represent the unknown width of the rectangle. Write an equation that can be solved for the unknown measurement.
B. Solve your equation to find the width of the rectangle. Show all your work.

Answer 1

what is the formula for perimeter of a rectangle ?

Answer 2

Well, if you draw out a rectangle, you would know that it would have to have 4 sides with each parallel pair of sides equal in length. Because our perimeter is 48 inches, we know that 18 inches of the perimeter come from the lengths of the rectangle. Therefore, the equation we can use is 2x + 18 = 48. Do you know what to do from there?

Answer 3

\(\color{#0cbb34}{\text{Originally Posted by}}\) @InsatiableSuffering
Well, if you draw out a rectangle, you would know that it would have to have 4 sides with each parallel pair of sides equal in length. Because our perimeter is 48 inches, we know that 18 inches of the perimeter come from the lengths of the rectangle. Therefore, the equation we can use is 2x + 18 = 48. Do you know what to do from there?
\(\color{#0cbb34}{\text{End of Quote}}\)
In this case, x would represent the width of not one side, but both sides of the rectangle.

Answer 4

nice job @InsatiableSuffering