Use calculus to find the largest possible area for a rectangular field that can be enclosed with a fence that is 400 meters long.

the largest rectangular area is actually a square.

 so the side would be 400/4 = 100 feet

 area of a square is S^2

100^2 = 10,000 square feet

answer: it's d

step-by-step explanation:

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6