B is correct because -6.75 is smaller than -6.5
15 slices, when you divide 3/72=24 then 360 divided by 24 is 15
Length of first bar = 1.75.
Length of second bar = 
Length of third bar =
.
Let us convert 

Therefore, 

<em>We can see that 1.75 is the longest out of 1.5833 and 1.667.</em>
<h3>Therefore,
length of longest bar is 1.75 feet.</h3>
<span>6x=480 ft
x=80 ft.
Area = x^2 = 80^2 = 6400 sq. ft.</span>