If a refrigerator is set to 0 degrees Fahrenheit, how cold is that in Degrees Centigrade?

To convert from degrees Fahrenheit to degrees Centigrade (Celsius), you can use the formula:

[ C = \frac{(F - 32) \times 5}{9} ]

Where ( F ) represents degrees Fahrenheit. In this case, the temperature is set at 0 degrees Fahrenheit.

Plugging in the value:

1. Subtract 32 from 0:

[

0 - 32 = -32

]

2. Multiply by 5:

[

-32 \times 5 = -160

]

3. Divide by 9:

[

\frac{-160}{9} \approx -17.78

]

Rounding to one decimal place gives you approximately -17.8 degrees Centigrade. This calculation confirms that when the refrigerator is set to 0 degrees Fahrenheit, it corresponds to about -17.8 degrees Centigrade, which aligns perfectly with the first choice. This temperature conversion is vital in pharmacy settings, especially for the storage of medications that require specific temperature controls.