You need an Engineer's Micrometer which will be accurate to either 1 hundredth of a MILLIMETRE, Or to 1 thousandth of an INCH.
You would use millimeters (mm) to measure the thickness of a house key, as it is a small unit appropriate for measuring such dimensions.
The best unit is a litre.
The best unit for measuring the length of a pencil is inches.
You would typically use millimeters (mm) to measure the thickness of a coin. This unit is commonly used for measuring small distances or thicknesses.
The thickness is of the order of a millimetre so a smaller unit - a micrometre, perhaps - is suitable.
you will use cm because it is useful then the other types of measurement
millimetres
mm
It's asking for how thick it is not the length of it. So the obvious answer is not centimeters or meters. It would be millimeter.
You need an Engineer's Micrometer which will be accurate to either 1 hundredth of a MILLIMETRE, Or to 1 thousandth of an INCH.
You would use millimeters (mm) to measure the thickness of a house key, as it is a small unit appropriate for measuring such dimensions.
The best unit is a litre.
centimeters
Micrometres.
The best unit for measuring the length of a pencil is inches.
You would typically use millimeters (mm) to measure the thickness of a coin. This unit is commonly used for measuring small distances or thicknesses.