Math Problem Statement

the rectangle has a perimeter of 24 inches the length is 2 cm write an equation

Solution

To create an equation for the given problem, we need to analyze the situation carefully.

  1. The perimeter of a rectangle is given by the formula:
    P=2(L+W)P = 2(L + W) where LL is the length and WW is the width.

  2. We are given:

    • The perimeter P=24P = 24 inches
    • The length L=2L = 2 cm.

However, there's a unit mismatch since the perimeter is in inches, and the length is in centimeters. To proceed, we must convert one unit to the other.

Conversion:

1 cm = 0.3937 inches.
Thus, L=2 cm×0.39370.7874 inchesL = 2 \ \text{cm} \times 0.3937 \approx 0.7874 \ \text{inches}.

Substituting into the formula:

24=2(0.7874+W)24 = 2(0.7874 + W)

Simplify and solve for WW (the width):

24=2(0.7874)+2W24 = 2(0.7874) + 2W

24=1.5748+2W24 = 1.5748 + 2W

2W=241.57482W = 24 - 1.5748

2W=22.42522W = 22.4252

W=22.42522W = \frac{22.4252}{2}

W11.2126 inches.W \approx 11.2126 \ \text{inches}.


Final Equation:

The equation for this problem is:
24=2(0.7874+W)24 = 2(0.7874 + W) Where WW is the width of the rectangle in inches.


Let me know if you would like the width solved further, or have questions!

Related Questions:

  1. What is the width of the rectangle in centimeters?
  2. How do you convert units between inches and centimeters?
  3. If the length was doubled, what would the new perimeter be?
  4. What is the area of the rectangle in square inches?
  5. Can you write an equation where both length and width are variables?

Tip: Always ensure units are consistent before setting up an equation!

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Math Problem Analysis

Mathematical Concepts

Geometry
Unit Conversion
Algebraic Equations

Formulas

Perimeter of a rectangle: P = 2(L + W)
Unit conversion: 1 cm = 0.3937 inches

Theorems

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Suitable Grade Level

Grades 6-8