A square nanometer.
square metres.
Square metre
Square centimetres (cm2).
To calculate the area of a unit circle you should use the equation x2+y2=1. The unit circle equal area of 1. You can find out more information on the mathisfun website for deeper explanation.
Kilometers
You would use square metres (m2) to find the area of a door.
square meter
Square meters.
Square metres
meters2
A square nanometer.
square metres.
Square metre
To find the area of a book cover in metric units, the most appropriate unit to use would be centimeters. The formula for finding the area of a book cover would be: length x width.
Square meters, generally.
Square centimetre.