Question

If 1 inch equals 2.54 centimetres how many cm are there in the 12 inches?

Answer 1

Hint: In order to convert the inch measure into Centimetre measure, multiply the given Inch with $2.54$ centimetre to get your required result.

Complete step by step answer:
The units inches and centimetres both are for measuring the length and height. The use of conversion is very important from one unit to the other without changing the relative amount of the same given quantity. There is a formula for converting the units from inches to equivalent centimetre can be as $1inch = 2.54cm$ that is 1 inch is approximately equal to 2.54 centimetres.
From the last mentioned, we get the condition $1\,inch = 2.54cm$. This leads us to the standard to change over inch measure to cm measure. To change over from inch to cm, multiply the inch by 2.54 centimetres.
So, in our question we are given 12 inches.
$1\,inch = 2.54\;cm$
Therefore, 12 inches
$ = 12 \times 2.54$ centimetre
Multiplying the above,
$ = 30.48$ cm
So, if we want to convert centimetres to inches $1cm = \dfrac{1}{{2.54}}$
$1cm = 0.393701{\text{ }}inches$
Therefore, 12 inches into centimetre $ = 30.48$cm.

Note: The centimetre, indicated by the symbol $cm$ is the SI unit for measuring angles, and is the standard unit of length measure utilized in numerous zones of arithmetic. The length and height is mathematically equivalent to the measurement in inches or centimetres; one inch is $1\,inch = 2.54cm$ or just we can say of $1cm = 0.393701{\text{ }}inches$. The unit is used in the International System Of Units and is currently viewed as a SI derived unit of the metric system.