Math Problem Statement

A figure is comprised of two congruent rectangles as shown. The perimeter of the exterior of the figure is represented by the equation P = 4w + 2h. Which represents the perimeter of the figure when solved for w?

Solution

The problem presented involves two congruent rectangles, and the perimeter of the exterior of the figure is given by the equation P=4w+2hP = 4w + 2h, where ww represents the width of each rectangle and hh represents the height. The question asks to solve this perimeter equation for ww.

Given:

P=4w+2hP = 4w + 2h We are to solve for ww.

Steps:

  1. Subtract 2h2h from both sides: P2h=4wP - 2h = 4w
  2. Divide both sides by 4: w=P2h4w = \frac{P - 2h}{4}

Thus, the correct expression for ww is w=P2h4w = \frac{P - 2h}{4}.

This matches the last option in the multiple-choice answers.

Correct answer:

w=P2h4\boxed{w = \frac{P - 2h}{4}}

Would you like further clarification or details?

Here are some follow-up questions to deepen understanding:

  1. How is the formula for the perimeter of the rectangle derived?
  2. What would happen if the two rectangles were not congruent?
  3. Can you derive a general formula for the area of this figure using ww and hh?
  4. How does the perimeter change if the heights of the rectangles are doubled?
  5. Can this concept be extended to three dimensions (e.g., surface area of a 3D shape)?

Tip: When solving for a variable, remember to isolate it step by step using inverse operations, such as addition, subtraction, multiplication, and division.

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Math Problem Analysis

Mathematical Concepts

Algebra
Geometry

Formulas

P = 4w + 2h

Theorems

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Suitable Grade Level

Grades 6-8