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How much inches is $ 1 $ feet?
A. $ 10 $
B. $ 12 $
C. $ 5 $
D. $ 7 $

Last updated date: 13th Jul 2024
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Hint: Both inches and feet are units of the measure of the length. We have the conversational relation between the inches and the feet and will use that to get the required value.

Complete step-by-step answer:
The units are defined as the standards for the measurement of the physical quantities which needs to be clear to be useful. Internationally, the units accepted standards for measurements of the physical quantities.
Different types of system of units are –
SI (International system of units)
The SI units are the standards of measurement defined by the international system of units.
MKS (Meter-kilogram-second) system
The MKS system is the system of units, where length is measured in meters, mass in kilograms and time in seconds.
CGS (centimetre-gram-second) system
The CGS system is the system of units, where length is measured in centimeters, mass in grams and time in seconds.
One feet is expressed as twelve inches.
 $ 1 $ feet $ = 12 $ inches
So, the correct answer is “ $ 1 $ feet $ = 12 $ inches”.

Note: It is very important to know the difference between the system of units and the conversional ratios between them. Since if we say mass of one it does not make any sense, also length of one meter, inch, feet and millimetre.