Math Problem Statement
I
Solution
The question in the image is in Gujarati and translates to:
Question: If the perimeter of a rectangle is 80 meters and the area is 400 square meters, can such a rectangle be constructed? If possible, find its length and breadth.
Let's solve this step by step:
Given:
- Perimeter meters
- Area square meters
Formulae:
-
The perimeter of a rectangle:
where is the length and is the breadth. -
The area of a rectangle:
Step 1: Solve for the perimeter
From the perimeter equation , we have:
Step 2: Solve for the area
The area equation gives us:
Step 3: Solve the system of equations
From Equation 1, we can express as: Substitute this into Equation 2: Rearranging this equation:
This is a quadratic equation, which can be solved using the quadratic formula:
Step 4: Find the length
Using in Equation 1:
Step 5: Conclusion
Both the length and breadth of the rectangle are 20 meters, meaning the rectangle is a square.
Thus, the rectangle can be constructed, and its length and breadth are both 20 meters.
Would you like more details or further clarifications?
Here are five related questions:
- What is the difference between the perimeter and area of a rectangle?
- Can a rectangle always be a square if its length equals its breadth?
- How do you solve quadratic equations in geometry problems?
- What are other ways to find the dimensions of a rectangle given the perimeter and area?
- How do the dimensions of a rectangle change when the perimeter is constant but the area changes?
Tip: Always check for consistency between the perimeter and area equations when solving geometry problems involving rectangles.
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Math Problem Analysis
Mathematical Concepts
Geometry
Algebra
Quadratic Equations
Formulas
Perimeter of rectangle: P = 2(l + b)
Area of rectangle: A = l × b
Quadratic equation: ax^2 + bx + c = 0
Theorems
Quadratic Formula Theorem
Suitable Grade Level
Grades 8-10
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