<u>Answer:</u> The temperature in Fahrenheit is 68°F.
<u>Explanation:</u>
We are given:
Thermometer reading = 20°C
To convert this temperature into Fahrenheit, we use the conversion factor:

where,
= temperature in Fahrenheit
= temperature in degree Celsius
Converting the value, we get:

Hence, the temperature in Fahrenheit is 68°F.