To convert 21 degrees Celsius to degrees Fahrenheit, you can use the following formula:
°F = (°C × 9/5) + 32
Here’s how you do it step by step:
1. Multiply the Celsius temperature by 9/5.
21 × 9/5 = 37.8
2. Add 32 to the result.
37.8 + 32 = 69.8
So, 21 degrees Celsius is equal to 69.8 degrees Fahrenheit.
This conversion is useful when you need to understand temperatures in different units, especially when traveling or working with international data.