11. If a thermometer indicates 40 degrees Celsius, what's the temperature in degrees Fahrenheit?

A. [tex]72^{\circ} F[/tex]
B. [tex]104^{\circ} F[/tex]
C. [tex]22^{\circ} F[/tex]
D. [tex]54^{\circ} F[/tex]



Answer :

To convert a temperature from degrees Celsius to degrees Fahrenheit, you can use the following formula:
[tex]\[ F = \left( C \times \frac{9}{5} \right) + 32 \][/tex]

Let's apply this formula step-by-step to convert 40 degrees Celsius to degrees Fahrenheit:

1. Start with the given temperature in Celsius, which is [tex]\( 40^{\circ} C \)[/tex].
2. Multiply the Celsius temperature by [tex]\(\frac{9}{5}\)[/tex]:

[tex]\[ 40 \times \frac{9}{5} = 40 \times 1.8 = 72 \][/tex]

3. Add 32 to the result from the previous step:

[tex]\[ 72 + 32 = 104 \][/tex]

So, the temperature in degrees Fahrenheit is [tex]\( 104^{\circ} F \)[/tex].

The correct answer is:
B. [tex]\( 104^{\circ} F \)[/tex]