SOLUTION: The length of a rectangle is 4cm longer than the width If the perimeter is 20cm, what is the area of the rectangle
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Question 216508: The length of a rectangle is 4cm longer than the width If the perimeter is 20cm, what is the area of the rectangle
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!
The length of a rectangle is 4cm longer than the width If the perimeter is 20cm, what is the area of the rectangle
Step 1. Let w be the width.
Step 2. Let w+4 be the length
Step 3. Perimeter P means adding up all 4 sides of the rectangle or .
Step 4. Solving yields the following steps.
Subtract 8 from both sides of equation
Divide 4 to both sides of the equation
and
Check P=3+3+7+7=20...which is true statement.
Step 5. Then, area = width * length = 3 * 7= 21 square centimeters.
Step 6. ANSWER: The area is 21 square centimeters.
I hope the above steps were helpful.
For FREE Step-By-Step videos in Introduction to Algebra, please visit
http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit
http://www.FreedomUniversity.TV/courses/Trigonometry.
Good luck in your studies!
Respectfully,
Dr J
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