## Convert 0.5 yards per minuet to feet per minuet

October 14, 2019// Blog//

**Answer:**

**The maximum area that can be enclosed is 40000 feet square.**

**Step-by-step explanation:**

**Given :** If 800 feet of fencing is used to enclose a rectangular plot of land that borders a river.

**To find : **What is the maximum area that can be enclosed?

**Solution : **

Let the width of the rectangular is x feet.

We have given 800 feet of fencing i.e. perimeter = 800 feet.

**Perimeter of rectangle is**

**The area of the rectangle is **

**To maximize the area derivate w.r.t x**

**Put A’=0**

**i.e. width of the rectangle is** x=200.

**The length of the rectangle is**

**The area of the rectangle is **

**Therefore, The maximum area that can be enclosed is 40000 feet square.**