Convert 100 degrees Fahrenheit to Celsius using the formula C = (F - 32) × 5/9.

• A. 37.78 degrees Celsius
• B. 40 degrees Celsius
• C. 32 degrees Celsius
• D. 35 degrees Celsius

Answer: (A)

To convert 100 degrees Fahrenheit to Celsius using the formula ( C = (F - 32) \times \frac{5}{9} ), start by substituting the Fahrenheit value into the equation.

First, replace ( F ) with 100:

[

C = (100 - 32) \times \frac{5}{9}

]

Calculating the subtraction gives:

[

C = (68) \times \frac{5}{9}

]

Next, multiply 68 by (\frac{5}{9}):

[

C = \frac{340}{9}

]

Performing the division leads to:

[

C \approx 37.78

]

Thus, the conversion of 100 degrees Fahrenheit yields approximately 37.78 degrees Celsius. This computation aligns correctly with the formula and demonstrates the direct relationship between Fahrenheit and Celsius temperature scales. This process is why the correct answer is 37.78 degrees Celsius, illustrating the methodology behind Fahrenheit to Celsius conversions.