You would use square metres (m2) to find the area of a door.
If it's a standard book, the standard units would probably be cm2.
you find the length and width by counting the numbers on the side to find the width and counting the numbers going across to find the length
Length x Breadth x Height
To find the side length of a cube with a volume of 8cm^3, you can use the formula for the volume of a cube, which is side length cubed. Therefore, you would take the cube root of the volume to find the side length. In this case, the cube root of 8cm^3 is 2cm, so the side length of the cube is 2cm.
a millimeter
A square nanometer.
Centimetre
Metres.
Micron
meters
no clue sorry by.
Meter
On a ruler using the metric system, you would typically find units such as centimeters and millimeters. These units are used for measuring length and are based on powers of ten for easy conversion. The metric system is widely used in many countries around the world.
Any metric unit would do. But it might be easier to pick something smaller than the length of the pencil, like a centimeter, or a millimeter.
usually kilometers
It's gonna be inches/centimeters.