Which formula is used to convert Celsius to Fahrenheit?

• A. F = (C x 1.8) + 32
• B. F = (C + 32) / 1.8
• C. F = (C - 32) x 1.8
• D. F = (C x 1.8) - 32

Answer: (A)

The formula used to convert Celsius to Fahrenheit is F = (C x 1.8) + 32. This formula operates by first multiplying the temperature in Celsius (C) by 1.8, which scales the temperature to the Fahrenheit equivalent based on the size of the degree difference between the two scales. Celsius and Fahrenheit have different zero points and increments; hence, simply scaling Celsius degrees is insufficient. After this multiplication, adding 32 adjusts the result to align with the Fahrenheit scale.

For example, at 0 degrees Celsius, using this formula yields 32 degrees Fahrenheit. This reflects the known freezing point of water in both temperature systems. The combination of multiplication and addition accurately maps the Celsius temperature onto the Fahrenheit scale.

In contrast, the other options present alternate formulas that do not correctly represent the conversion from Celsius to Fahrenheit. They may involve incorrect operations or sequences that would yield inaccurate results for the conversion, which is why they are not applicable for this conversion task.