SOLUTION: Word Problem Two -A rectangular plot of ground measuring 12 meters by 20 meters is surrounded by a sidewalk of a uniform width. The area of the sidewalk is 68 square meters. Find

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Question 230898: Word Problem Two -A rectangular plot of ground measuring 12 meters by 20 meters is surrounded by a sidewalk of a uniform width. The area of the sidewalk is 68 square meters. Find the width of the walk.. (Show a complete algebraic solution for the problem and check the answer.)

I DREW A PICTURE THEN WAS LOST….
He said that you can possibly use quadratic equation but don’t have to..

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let the width of the walk =
Then the area of the plot plus
the walk is:

The area of the plot is given as:
m2
The area of the walk is given as m2
Thus, the area of the plot plus walk is
, so





I can solve by completing the square



Take square root of both sides

m
The walk is 1 meter wide
check:




OK

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