Math Problem Statement

the length of a rectangle is twice the width. The area of the rectangle is 92 units. Notice that you can divide the rectangle into two squares with equal area. How can you estimate the side length if each square? estimate the length and width if the rectangle

Solution

Let's break this problem down step by step:

Step 1: Understanding the rectangle's properties

  • We know that the length (L) of the rectangle is twice the width (W). So we can express this as: L=2WL = 2W
  • We are also given that the area of the rectangle is 92 square units. The formula for the area of a rectangle is: Area=L×W\text{Area} = L \times W Substituting L=2WL = 2W into the area formula: 92=(2W)×W=2W292 = (2W) \times W = 2W^2

Step 2: Solving for the width (W)

  • Rearranging the equation: 2W2=922W^2 = 92 W2=922=46W^2 = \frac{92}{2} = 46
  • Now, solve for WW: W=466.78unitsW = \sqrt{46} \approx 6.78 \, \text{units}

Step 3: Finding the length (L)

  • Since the length is twice the width: L=2W=2×6.7813.56unitsL = 2W = 2 \times 6.78 \approx 13.56 \, \text{units}

Step 4: Estimating the side length of each square

  • The rectangle can be divided into two squares with equal areas. The area of each square would be half the area of the rectangle: Area of each square=922=46square units\text{Area of each square} = \frac{92}{2} = 46 \, \text{square units} Since the area of a square is given by s2s^2 (where ss is the side length), we have: s2=46s^2 = 46 Solving for ss: s=466.78unitss = \sqrt{46} \approx 6.78 \, \text{units}

Final Answer:

  • The side length of each square is approximately 6.786.78 units.
  • The width of the rectangle is 6.786.78 units.
  • The length of the rectangle is 13.5613.56 units.

Would you like more details on any part of the solution?

5 Related Questions:

  1. What is the perimeter of this rectangle?
  2. How would the dimensions change if the area of the rectangle were doubled?
  3. What is the diagonal length of this rectangle?
  4. If the length were increased by 50%, what would the new area be?
  5. Can a different rectangle have the same area but different dimensions?

Tip:

Always verify your results by recalculating the area or perimeter to ensure the solution is consistent with the problem's conditions.

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Math Problem Analysis

Mathematical Concepts

Geometry
Algebra
Area of Rectangles
Square Roots

Formulas

Area of a rectangle = length × width
Area of a square = side^2
Length = 2 × Width

Theorems

Area formula for rectangles
Properties of squares
Square root theorem

Suitable Grade Level

Grades 6-8