SOLUTION: A fishpond is three feet by four feet. How wide a strip of concrete can be poured around the pond if there is enough concrete for 44 square feet?

Question 548863: A fishpond is three feet by four feet. How wide a strip of concrete can be poured around the pond if there is enough concrete for 44 square feet?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
length of pool 4
Width = 3
Area = 12 M^2
Area of sidewalk =44 M^2
Length of ground + sidewalk =4
width of ground + sidewalk = 12+2x

(4+2x)(3+2x)-44 =12
12+8x+6x+4X^2-44=12
4X^2+14x-44=0
/2
2x^2+7x-22=0
2x^2+11x-4x-22=0
x(2x+11)-2(2x+11)=0
(x-2)(2x+11)=0
x=2 which is positive
width = 2ft

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