Question

Question #99294

Answer 1

`L = 800 -2W`

Explanation:

The fenced area will have three sides, as one side is bordered by the river.

So, The perimeter, `P`, of the fence is given by:

`P = L+2W`

However, we have 800 yards of fence. Thus:

`P=800`

Hence:

`L+2W = 800`
`L = 800 -2W`