SOLUTION: the length of a rectangle is 6m longer than its width. what are the possible widths if the area is at least 630 cm^2

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Question 322320: the length of a rectangle is 6m longer than its width. what are the possible widths if the area is at least 630 cm^2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a rectangle,
A=L%2AW
In this case,
L%2AW%3E=630
and
L=6%2BW
%286%2BW%29W%3E=630
W%5E2%2B6W%2B9-630%3E=9
%28W%2B3%29%5E2%3E=639
W%2B3%3E=sqrt%28639%29
W%3E=sqrt%28639%29-3
or approximately,
W%3E=22.278 cm
Then
L%3E=28.278 cm
and the area,
A%3E=630