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If a thermometer indicates 30 degrees Celsius, what is the temperature in degrees Fahrenheit?

A24°F
B17°F
C54°F
D86°F

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If a thermometer indicates 30 degrees Celsius, the temperature in degrees Fahrenheit is 86°F.

Boiling water measures 100 degrees in Celsius, and 212 degrees in Fahrenheit. Freezing water measure 0 degrees in Celsius, and 32 degrees in Fahrenheit. 

So, if you want to convert Celsius into Fahrenheit, you will need to:
Multiply by 180/100
Add 32

Let's convert 30 degrees Celsius into Fahrenheit.
30 \(\times\) 180/100 = 54
54 + 32 = 86

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