Math Problem Statement
The length of a rectangle is five inches more than twice the width. The perimeter is 34 inches. Find the length and width.
Solution
Let the width of the rectangle be denoted by , and the length be denoted by .
Step 1: Express the relationship between length and width
We are given that the length is five inches more than twice the width, so:
Step 2: Express the perimeter formula
The perimeter of a rectangle is given by the formula: We are told that the perimeter is 34 inches, so:
Step 3: Substitute the expression for
From step 1, we have . Substitute this into the perimeter equation:
Step 4: Simplify and solve for
Expand the equation: Combine like terms: Subtract 10 from both sides: Divide both sides by 6:
Step 5: Solve for
Now that we know , substitute this back into the expression for :
Final Answer:
- Width = 4 inches
- Length = 13 inches
Would you like more details, or do you have any questions?
Here are 5 related questions you might want to explore:
- What would the dimensions be if the perimeter were 40 inches?
- How would the problem change if the length was three times the width instead?
- What is the area of the rectangle with these dimensions?
- Can you find the diagonal of the rectangle using the Pythagorean theorem?
- What would happen if the perimeter were halved?
Tip: For any rectangle, once you know the length and width, you can easily compute its area by multiplying the two values together.
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Math Problem Analysis
Mathematical Concepts
Algebra
Geometry
Linear Equations
Formulas
Perimeter of a rectangle P = 2l + 2w
Linear relationship l = 2w + 5
Theorems
Perimeter formula of a rectangle
Suitable Grade Level
Grades 6-8
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