Question 841273
let the side of the square vegetable garden be a. Area of the garden = a^2 and the enclosed fencing, ie., perimeter = 4a.
Given that cost of fence per foot is $4.00 the total cost of fencing will be 4*4a
= 16a
cost for preparing soil is 0.6 per foot^2 = 0.6*a^2

Total cost that can be enclosed = 560
then Cost of fencing + cost of perparing soil =560
16a+0.6a^2 = 560
multiplying the above by 10/2
80a + 3a^2 = 2800
3a^2+80a - 2800  = 0
factorizing the eqaution we have a = 20