Rectangular Perimeter & Area Problem
Not what you're looking for?
Given, this partial equation, how do I complete it?
Finding the width I used this equation - L= 2W + 2
I know my length is 10 feet. 10 = 2W + 2
10 -2 ft = 2W +2 - 2
8 = 2W
8/2 = 2W/2
4 = W
Questions:
Define the shape of the rectangular area by establishing a relationship between the length and width of the rectangle. For example, L = 2W + 5, or W = 3L â?" 4. Be sure to include the appropriate units (inches, feet, yards, miles, or meters).
Using the fact that A = LW, together with the relationship defined in step 2, eliminate one of the variables to set up a quadratic equation.
Solve the quadratic equation using any of the techniques learned in this unit. The solution(s) will be one of the dimensions; use step 2 to find the other.
Now determine the perimeter so that you will know how much fencing to buy.
Summarize your findings.
Purchase this Solution
Solution Summary
This solution shows how to solve a classic problem involving a fixed amount of fence to be used to enclose three sides of a rectangle with the fourth side closed by the side of a building. The problem involves relating perimeter and area to each other and solving for unknown dimensions. This is a classic algebra problem required of almost all second year high school or college level algebra courses.
Solution Preview
Repeating the given information:
L= 2W + 2
L=10
10 = 2W + 2
10 -2 ft = 2W +2 - 2
8 = 2W
8/2 = 2W/2
4 = W
A=L*W
So:
A = 2L + ...
Purchase this Solution
Free BrainMass Quizzes
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.
Probability Quiz
Some questions on probability