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July 25, 2014

July 25, 2014

Posted by **Anonymous** on Wednesday, September 21, 2011 at 10:01pm.

- Math -
**Jenni**, Wednesday, September 21, 2011 at 11:51pmBoring

- Math -
**Steve**, Thursday, September 22, 2011 at 4:57pmTrue, but that gets 0 points.

If the walk is w feet wide, then the inside dimensions are 24x26 and the outer dimensions are 24+w and 26+w. So, the area of the walk is the outer area minus the inner area.

(26+2w)(24+2w) - 26*24 = 624 + 100w + 4w^2 - 624 = 104

4w^2 + 100w - 104 = 0

w^2 + 25w + -26 = 0

(w-1)(w+26) = 0

So, w = 1 (-26 makes no physical sense)

26*28 - 26*24 = 26*4 = 104 as wanted.

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