# ISEE Upper Level Math : How to find the length of a side in other polygons

## Example Questions

### Example Question #1 : How To Find The Length Of A Side In Other Polygons

The perimeter of a regular octagon is one mile. Give the sidelength in feet.      Explanation:

One mile is equal to 5,280 feet, so divide this by 8: feet

### Example Question #2 : How To Find The Length Of A Side In Other Polygons

What is the sidelength, in feet and inches, of a regular octagon with perimeter feet?      Explanation: feet is equivalent to inches. Each side of a regular octagon, an eight-sided figure, measures one-eighth of this:

Each side of an octagon with perimeter feet measures inches.

Since ,

this is equal to .

### Example Question #1 : How To Find The Length Of A Side In Other Polygons

In a septagon, each of the sides are equal to one another. If the perimeter is feet, what is the length of one of the sides?     Explanation:

If the perimeter of a septagon, in which each side is equal to the other, is 98, the length of each side will be 7 feet because 98 divided by 7 is 14.    ### All ISEE Upper Level Math Resources 