Math Problem Statement
Solution
To solve this problem, we need to:
Step 1: Define the variables
Let:
- = the width of the rectangle (in yards),
- = the length of the rectangle.
We are told that: and the area of the rectangle is given as:
Step 2: Substitute into the area equation
Step 3: Expand and simplify
Rearrange into standard quadratic form:
Step 4: Solve the quadratic equation
We use the quadratic formula: where , , and .
Substitute into the formula:
Simplify:
Solve for the two possible values of :
- ,
- (not possible, as width cannot be negative).
So, .
Step 5: Find the length
Substitute into :
Step 6: Calculate the perimeter
The perimeter of a rectangle is: Substitute and :
Final Answer:
The perimeter is 68 yards.
Would you like a detailed explanation of any step or have further questions?
Here are some related questions for further exploration:
- How do you solve quadratic equations by factoring?
- What are other methods to calculate the perimeter of shapes?
- Can the quadratic formula be used for all quadratic equations?
- How do changes in area affect the perimeter of a rectangle?
- What is the relationship between length and width in similar problems?
Tip: Always verify your solutions by substituting back into the original equations!
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Math Problem Analysis
Mathematical Concepts
Algebra
Geometry
Quadratic Equations
Formulas
Area of a rectangle: Area = length × width
Perimeter of a rectangle: Perimeter = 2 × (length + width)
Quadratic formula: w = (-b ± √(b² - 4ac)) / 2a
Theorems
Quadratic formula
Suitable Grade Level
Grades 8-10
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