Metre.
The answer will depend on whether you want its perimeter or its area.
I would use a ruler or a tape measure. After I was done, I would express the measurement in centimeters or inches.
If 40 is the measure of one side, the perimeter is 160.
You, add S1+S2+S3+S4=7+7+2+2= 18with the unit of measure so like inches it would be18infeet18ft18m18km
Metre.
it depends on the shape. the unit should be given
Perimeter is a length or a distance, just like depth, height, and circumference are. Any unit of length can be used to describe a perimeter. Some good ones are ... - nanometer - inch - kilometer - parsec - furlong - yard - league - mile - light-year.
miles or kilometers
The answer will depend on whether you want its perimeter or its area.
I would use a ruler or a tape measure. After I was done, I would express the measurement in centimeters or inches.
A tape measure would be the tool, measuring in centimetres or inches.
If 40 is the measure of one side, the perimeter is 160.
The perimeter uses same unit as length. It is measured in meter , centimeter etc.
Perimeter isn't an unit of measure, it's another name for "outside edge", or "boundary"
kilometer
it isn't- it can be measured in any unit of measure that measures length