How much is $70$ degrees Fahrenheit in Celsius?

Hint: Both the Fahrenheit and the Celsius are the two different ways of measurement of temperature. We can convert the degree Fahrenheit to Celsius. We have a formula given by: $^ \circ Celsius = \dfrac{5}{9} \times {(^ \circ }Fahrenheit - 32)$ . By using this formula we can get the required answer.

Complete step-by-step answer:
Degree Celsius is the measure of temperature and degree Fahrenheit also another way of measuring temperature. There are different ways of measurements used to measure temperature. Those are, Celsius, Fahrenheit and Kelvin.
In the given problem they have asked to convert from degree Celsius to degree Fahrenheit. This can be done by using a conversion formula given by:
$^ \circ Celsius = \dfrac{5}{9} \times {(^ \circ }Fahrenheit - 32)$
Now, they have asked to convert $70$ degrees Fahrenheit to Celsius, so by substituting the Fahrenheit value arrive at the required form of temperature,
Therefore, $^ \circ Celsius = \dfrac{5}{9} \times (70 - 32)$
By subtracting the degree Fahrenheit by $32$, we get
${ \Rightarrow ^ \circ }Celsius = \dfrac{5}{9} \times (38)$
Now, simplifying the above equation, we get
${ \Rightarrow ^ \circ }Celsius = 21.1111111$
We can retain the answer as we got or we can also round off the above number that is $21.1111111$ to $21.11$ (Here the values are less than five so we write as it is otherwise we could add one to the before number while rounding off).
Therefore the degree Celsius of $70$ degree Fahrenheit is $21.1111111$.

Note: Not only we can convert from Fahrenheit to Celsius, but also we can convert Celsius to Fahrenheit. For Celsius to Fahrenheit conversion, we need to multiply the degree Fahrenheit value by $\dfrac{9}{5}$ and then if we $32$ to the result obtained we get the degree Fahrenheit form.