Math Problem Statement
What are the dimensions of a rectangle with area of 2900 meters squared if one side is 8 meters longer than the other?
Solution
We are given that the area of a rectangle is 2900 square meters, and one side is 8 meters longer than the other. We need to find the dimensions of the rectangle.
Let:
- be the length of the shorter side of the rectangle (in meters).
- The longer side would then be meters (since it is 8 meters longer than the shorter side).
The formula for the area of a rectangle is:
Substitute the known values into the equation:
Now, expand and solve the quadratic equation:
Rearrange the terms:
To solve this quadratic equation, we will use the quadratic formula:
For the equation , the coefficients are:
Substitute these values into the quadratic formula:
Now, we have two possible solutions:
Since the length of a side cannot be negative, we discard and accept .
Thus, the shorter side is 50 meters, and the longer side is:
Final Answer:
- The dimensions of the rectangle are 50 meters by 58 meters.
Would you like a more detailed explanation or have any questions? Here are some related questions:
- How would the solution change if the area were different, say 3600 square meters?
- How can we find the dimensions of a rectangle if only the perimeter is given instead of the area?
- What happens to the dimensions of the rectangle if the difference between the sides is changed to 10 meters?
- Can we solve this kind of problem using a system of equations with different relationships between the sides?
- How do we graph a quadratic equation like the one we solved to visualize the solutions?
Tip: Always check if both solutions from a quadratic equation are physically meaningful in the context of the problem (in this case, side lengths cannot be negative).
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Equations
Geometry
Formulas
Area of a rectangle = length × width
Quadratic equation formula: x = (-b ± √(b² - 4ac)) / 2a
Theorems
Quadratic Formula
Suitable Grade Level
Grades 8-10
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