Concept explainers
To calculate: The possible widths of the fountain.
Answer to Problem 44E
The required width of the fountain is
Explanation of Solution
Given information:
Perimeter of the rectangular fountain = 400 feet
Least area of the fountain = 9100 square feet
Formula used:
Perimeter of a rectangle:
Perimeter of a rectangle is
Area of the rectangle:
Area of a rectangle is
Calculation:
Consider the width and length of the rectangular fountain be x and y .
The given area of the fountain is 900 feet.
So,
Rewrite the above equation as:
The least area of the fountain is 9100 square feet.
So,
Substitute
Solve the above inequality.
The solution of the inequality is
Hence, the required width of the fountain is
Chapter 3 Solutions
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