<PRE><B>Question 271540</B>
A Walkway of uniform width has area 72m ^2 and surrrounds a swimming pool that is 8m by 10m. Find the Width of the walkway
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(w+8)*(w+10) = 72 + 80
w^2 + 18w + 80 = 152
w^2 + 18w - 72 = 0
*[invoke solve_quadratic_equation 1,18,-72]
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w = -9 + 3*sqrt(17) meters
w =~ 3.369 meters


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