Question 935989
A rancher wants to use 400 feet of fencing to enclose a rectangular area of 5100 square feet. What dimensions should the rectangle have?
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let x=width of rectangular area
length=(400-2x)/2=(200-x)
length*width=area
x(200-x)=5100
200x-x^2=5100
x^2-200x+5100=0
(x-170)(x-30)=0
x=170
or
x=30
200-x=170
What dimensions should the rectangle have?
width=30 ft
length=170 ft