Yards if you work in imperial units or metres if you work in metric units
The area of a rectangle is (length) multiplied by (width). The units don't matter. Just make sure that 'length' and 'width' are both measured in the same unit, whatever the unit is.
Length, width and height are all measurements of distance. Distance is measured in meters (metric system) or inches/feet/miles (imperial system).
Metric units include millimeters, centimeters, decimeters, and meters.
"Metric conversion" refers to the change from English units of measurement to metric units.
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.
A millimetre.
the metric system
Yards if you work in imperial units or metres if you work in metric units
You would typically use centimeters (cm) or millimeters (mm) to measure the width of a book. These units provide a more precise measurement for smaller objects like books.
A ruler
The area of a rectangle is (length) multiplied by (width). The units don't matter. Just make sure that 'length' and 'width' are both measured in the same unit, whatever the unit is.
Length, width and height are all measurements of distance. Distance is measured in meters (metric system) or inches/feet/miles (imperial system).
That depends a lot on what you want to measure: the cow's length, width, volume, mass, density, color, ...
Metric units include millimeters, centimeters, decimeters, and meters.
metric units are used for everything in Canada
SI and metric are the same units.