Math Problem Statement
The perimeter of a rectangle of 150 feet. The length of the rectangle is twice the width. Find the length and width of the rectangle.
Solution
To find the length and width of the rectangle, we can use the following information:
- The perimeter of the rectangle is 150 feet.
- The length () is twice the width ().
Step 1: Use the formula for the perimeter of a rectangle
The perimeter of a rectangle is given by the formula: We know that the perimeter feet, so we can write:
Step 2: Express the length in terms of the width
Since the length is twice the width, we can write:
Step 3: Substitute into the perimeter equation
Now substitute into the perimeter equation: Simplifying this equation:
Step 4: Solve for the width
To find the width, divide both sides of the equation by 6:
Step 5: Find the length
Now that we know the width is 25 feet, substitute this value into the equation :
Final Answer:
- Width = 25 feet
- Length = 50 feet
Would you like more details, or do you have any questions?
Here are 5 related questions:
- How would the perimeter change if the width were increased by 5 feet?
- What would the area of this rectangle be?
- If the width was halved, what would the new dimensions and perimeter be?
- How would the solution change if the perimeter was 200 feet instead of 150 feet?
- Can you derive a general formula for the width and length if the perimeter and the relationship between length and width are known?
Tip: When dealing with geometric problems, always check if relationships between sides can help simplify equations.
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Math Problem Analysis
Mathematical Concepts
Geometry
Algebra
Formulas
Perimeter of a rectangle P = 2L + 2W
L = 2W
Theorems
-
Suitable Grade Level
Grades 5-7
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