We can use either meter or centimeter to measure a rectangle. For a large area of rectangle we can also use "feet" or " yards". Using "meter" is a convenient form to measure the length of the rectangle.
By unit of length and distance and conversion ,we can say that the most appropriate unit to measure the length of a finger is cm.
cm is not a unit of area, it is a unit of length. If you mean cm2, choose any measure (in cm) for the length, then divide 25 by that length to obtain the corresponding width.
Inches
cm
You would use meters.
I would use feet
yards
centimeter
You would use the SI unit meter (m) to measure the length of a DVD case.
miles or kilomiters
feet
miles