21 c to f

Step 1: Identify the conversion factor

The conversion factor from celsius to fahrenheit is:

1 celsius = 3.32381 fahrenheit

Step 2: Set up the calculation

To convert 21 celsius to fahrenheit, multiply 21 by the conversion factor 3.32381:

21×3.32381

Step 3: Calculate

21×3.32381=69.800

Step 4: Round the result

The result is approximately: 69.8 fahrenheit

Final Answer:

21 celsius is approximately 69.8 fahrenheit.