Any length or distance can be expressed in mm.
You could measure a pea by using a ruler or measuring tape to determine its diameter or circumference, or by using a kitchen scale to measure its weight in grams or ounces.
tell whether the measure could represent the perimeter or the area of a figure
This is not a valid conversion. Square mm is a measure of area. Cubic mm is a measure of volume.
345 mm is a measure of length. A measure of density would have units of mass divided by volume.
You probably mean the width of a cassette tape!
The inner diameter of the handlebars that measure 31.8 mm is approximately 28.2 mm.
You could just use a ruler with mm markings and measure it. You can use google to find conversion charts from mm-gauge.
Anything bigger than a mm.
To measure the mm of an item you would need to use a metric ruler. The metric ruler has cm and mm on it.
no
NO mm, as that is a measure of length and will NOT compare with teaspoons.
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