Answer :

To convert a temperature from Fahrenheit to Celsius, you can use the following formula:

[tex]\[ \text{Celsius} = (\text{Fahrenheit} - 32) \times \frac{5}{9} \][/tex]

Let's apply this formula to convert [tex]\(81^{\circ} F\)[/tex] to Celsius:

1. Start with the temperature in Fahrenheit: [tex]\(81^{\circ} F\)[/tex].

2. Subtract 32 from the Fahrenheit temperature:
[tex]\[
81 - 32 = 49
\][/tex]

3. Multiply the result by [tex]\(\frac{5}{9}\)[/tex]:
[tex]\[
49 \times \frac{5}{9} \approx 27.22
\][/tex]

Therefore, [tex]\(81^{\circ} F\)[/tex] is approximately [tex]\(27.22^{\circ} C\)[/tex].