Answer:
That depends on exactly what you want to 'do' to it or with it. Do you want to calculate it ?
Spell it ? Define it ? Walk around it ? Send it in Morse Code ?
The perimeter of an area or object is the total distance around its boundary. Measure
each side with a ruler, yardstick, tape measure, etc. Then add all of these numbers
together, and you have the perimeter.