Question

A fence post is required every 10 feet, how many post are required for a fenced enclosure that measures 90 feet by 90 feet?

Answer 1

Given that the enclosure area is a square of side 90 feet.

So its perimeter (P) is given by,

`\begin{gathered} P=4* Side \\ P=4*90 \\ P=360 \end{gathered}`

So the total length of the fence will be 360 feet.

It is given that a fence post is required for every 10 feet.

Then if follows that,

`\begin{gathered} 10\text{ ft}\equiv1\text{ post} \\ 360\text{ ft}\equiv(360)/(10)=36\text{ post} \end{gathered}`

Thus, there are 10 fence post required for a fenced enclosure that measures 90 feet by 90 feet.