Yeah. just as he said............,

the formula to use is, P=4s.

Now you know P=64, so just plug in the info.

64=4s

Now solve the rest.

64/4=4s/4

16=S

Simple???

And again................ :roll: ,

try to do these things yourself before you post simple Q's like this. Why not just look at examples of some prevous post that are

**quite** similar like this???

:roll:

heres a good webpage that will help you understand this concept.

__http://www.math.com/tables/geometry/areas.htm__
hope this helps ALOT.