Any object with a mass can be measured with kilograms. So, if you want to find the mass of something, you can use kilograms. Or grams if it is small.
your finger nail can be measured in millimeters
Bigger objects like celestial bodies ,Earth ,sun their radius are measured in kilometers .
Objects composed of tiny amounts of mass.
Usually in kilometers. Larger objects, such as galaxies, may be measured in light-years, or in parsec.
A basketball typically weighs around 0.6 to 0.7 kilograms.
When you have calculated or measured it.
The height of a hill.
Anything physical can be measured in cm.
63.5
2.5?
400
Objects in a compound light microscope are typically measured by magnification levels, which determine how much larger the object appears compared to the naked eye. Additionally, objects can be measured in micrometers (μm) or nanometers (nm) to quantify their size and dimensions accurately.