<PRE><B>Question 721968</B>
Let the width of sidewalk be x															
..															
Length of pool =			10	ft											
Width =			6	ft											
															
Area =			60		m^2										
Area of sidewalk =			36	m^2											
Length of pool + sidewalk =							10	+	2	x 					
width of pool + sidewalk =				6	+	2	x								
															
(	10	+	2	x	)	(	6	+	2	x	)	+	-60	=	36
															
	60	+	20	x	+	12	x	+	4	X^2		+	-60	=	36
	4	X^2		+	32	x	+	-36	=	0					
	
{{{4x^2+36x-4x-36=0}}}

{{{4x(x+9)-4(x+9)=0}}}

(4x-4)(x+9)=0
4(x-1)(x+9)=0

x=1 OR -9
					
	Ignore negative value														
	width of sidewalk =		1	ft											
</PRE>