Question 226697
The length of a rectangle is four more than the width. The perimeter is 40 inches. Find the rectangle's measurements


Step 1.  The perimeter P means adding up all the four sides of a rectangle.


Step 2.  Let w be the width.


Step 3.  Let w+4 be the length since the length is 4 more than the width.


Step 4.  Then, P=w+w+w+4+w+4=40.


Step 5.  Solving yields the following steps


*[invoke explain_simplification "w+w+w+4+w+4=40" ]


For w=8 , then w+4=12 and P=2(8+12)=40 which is a true statement.


Step 6.  ANSWER:  The width is 8 inches and the length is 12 inches.


I hope the above steps were helpful. 


For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.


And good luck in your studies!


Respectfully,
Dr J


drjctu@gmail.com


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