Math Problem Statement

A piece of land is 800 square meters. If the length is twice its width, what is the dimension of the land?

Solution

The problem in the image asks for the dimensions of a piece of land that has an area of 800 square meters, with the condition that the length is twice the width. Here's how we can solve it:

Let:

  • ww be the width of the land (in meters),
  • l=2wl = 2w be the length of the land (since the length is twice the width).

The area AA of the land is given by: A=length×widthA = \text{length} \times \text{width} Substituting the given values: 800=2w×w800 = 2w \times w This simplifies to: 800=2w2800 = 2w^2 Now solve for ww: w2=8002=400w^2 = \frac{800}{2} = 400 w=400=20 metersw = \sqrt{400} = 20 \text{ meters}

Since the length is twice the width: l=2×20=40 metersl = 2 \times 20 = 40 \text{ meters}

Thus, the dimensions of the land are:

  • Width = 20 meters,
  • Length = 40 meters.

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

Here are 5 related questions to explore:

  1. How would the dimensions change if the area were 1600 square meters instead?
  2. What would happen to the dimensions if the length were three times the width instead of two?
  3. Can you generalize a formula for the width if you are given the area and a different length-to-width ratio?
  4. How would the solution change if the total perimeter of the land were given instead of the area?
  5. What are the implications of the dimensions if the land is subdivided into two equal parts?

Tip: When solving problems involving areas and dimensions, make sure to express everything in terms of a single variable when possible, as this simplifies solving the equation.

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Math Problem Analysis

Mathematical Concepts

Geometry
Algebra

Formulas

Area = Length × Width
l = 2w

Theorems

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Suitable Grade Level

Grades 7-8