6mis greater than 63 cm. Measurement is the process of comparing an unknown quantity to a known fixed quantity of the same type. The worth got on estimating an amount is called its extent. Numbers andunitsare used to describe a quantity's magnitude.Time in seconds (s), length in meters (m), mole (mole) of substance, ampere (A) of electric current, temperature in kelvin (K), luminance in candela (cd), and mass in kilograms (kg). They are used for a fixed quantity of substance having specificunits. These units are used around the globe.Learn more aboutmeasuring units,here:brainly.com/question/12629581#SPJ6...

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