Question

A farmer wants to enclose a rectangular field along a river on three sides. If 2,800 feet of fencing is to be used, what dimensions will maximize the enclosed area?
i cant figure this out

Answer 1

Calculus 1?

Answer 2

college algebra :(

Answer 3

any ideas?

Answer 4

good thing its multple choice, here are the posible answersA.
700 ft (parallel to the river) by 1,400 ft
B.
1,400 ft (parallel to the river) by 1,400 ft
C.
1,400 ft (parallel to the river) by 700 ft
D.
700 ft (parallel to the river) by 700 ft

Answer 5

Ok, well sans the calculus, you can draw it: