Math Problem Statement

The length of a new rectangular playing field is 5 yards longer than double the width. If the perimeter of the rectangular playing field is 250 yards, what are its dimensions?

Solution

Let's break down the problem:

  • The length of a new rectangular playing field is 5 yards longer than double the width.
  • The perimeter of the field is 250 yards.
  • You need to find the dimensions (the width and length).

Let’s define the variables:

  • Let ww be the width of the rectangular field in yards.
  • The length of the field is 2w+52w + 5 yards (because it's 5 yards longer than double the width).

Formula for the perimeter of a rectangle:

The perimeter PP of a rectangle is given by: P=2×(length+width)P = 2 \times (\text{length} + \text{width})

Substitute the given perimeter (250 yards) and the expressions for length and width: 250=2×((2w+5)+w)250 = 2 \times \left( (2w + 5) + w \right)

Solve the equation:

First, simplify the equation: 250=2×(3w+5)250 = 2 \times (3w + 5) 250=6w+10250 = 6w + 10 Subtract 10 from both sides: 240=6w240 = 6w Now divide both sides by 6: w=40w = 40

Find the length:

Substitute w=40w = 40 into the expression for the length: Length=2w+5=2(40)+5=80+5=85\text{Length} = 2w + 5 = 2(40) + 5 = 80 + 5 = 85

Final dimensions:

  • Width = 40 yards
  • Length = 85 yards

Would you like more details or have any questions about this solution?

Here are 5 related questions:

  1. How would the dimensions change if the perimeter were 300 yards?
  2. What would happen if the length were triple the width instead of double plus 5 yards?
  3. Can you solve this problem using the area of the rectangle?
  4. How does changing the perimeter affect the relationship between width and length?
  5. What other real-world problems could use a similar setup for their solution?

Tip: Always double-check that your variables correctly match the conditions given in word problems.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Perimeter Calculation

Formulas

Perimeter of a rectangle: P = 2(length + width)

Theorems

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Suitable Grade Level

Grades 8-10