A farmer has 800 meters of fence. Find the largest rectangular area that the farmer can enclose with the fence.

Answer 1

800 = 2(L+W) = perimeter

400 = L+W

L=W ( a sqaure gives the largest area for a rectangular area)

400= 2W

W = 200

L = 200

area =200^2 = 40,000 m^2 = largest area possible with 800 meters of fence, for a rectangular area