SOLUTION: Hi how are you i don't understand how to find the area and perimeter of a rectangle with expressions that are in a wordproblem.So if you don't mind can you help me.

Algebra ->  Rectangles -> SOLUTION: Hi how are you i don't understand how to find the area and perimeter of a rectangle with expressions that are in a wordproblem.So if you don't mind can you help me.      Log On


   

Question 802870: Hi how are you i don't understand how to find the area and perimeter of a rectangle with expressions that are in a wordproblem.So if you don't mind can you help me.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
In word problems, they will probably
tell you that the length and width are
related in some way.
---------------
They might say that the length equals
the width plus 3
----------------
In that case, call the width +x+ and
call the length +x+%2B+3+
----------------
Then it will ask you for the area or
the perimeter
+A+=+L%2AW+
+P+=+2L+%2B+2W+
-----------------
Substituting for +L+ and +W+,
+A+=+%28+x+%2B+3+%29%2Ax+
and
+P+=+2%2A%28+x+%2B+3+%29+%2B+2x+
----------------------
Then you use what else is given to find
out what they want.
-------------------
When dealing with area, they often want
to know the maximum area you can enclose
with a certain length of fence.
That always turns out to be a square area, so
the length and width would not be different
--------------------
When they are concerned with the perimeter,
they usually want to know the minimum
length of fence that will enclose a certain
area.
-------------
Hope this helps