21 c to f | 69.8 °F |
In the world, the temperature is calculated on the Celcius scale. As 100 degrees Celcius is the boiling point and 0 degrees Celcius is the freezing point of water. And the temperature is often measured on the Fahrenheit scale in the US.
T(°F) = T(°C) × 9/5 + 32
By using the above formula we can measure the temperature in Fahrenheit. In this formula, T(°F) is denoted the Fahrenheit degree temperature and T(°C) is denoted Celsius degree temperature.
Conversion of Celsius degree temperature to Fahrenheit degree temperature:
ºF = ºC × (9/5) + 32
F = [ C × (9/5) + 32 ]
Given that, C = 21
Then, F = 21 × (9/5) + 32
F = 37.8 + 32
F = 69.8
Thus, 21ºC is equal to 69.8ºF.