Denisse

**Concept:**

** **

Temperature can be expressed in three different units namely,

1. Degree Celsius

2. Kelvin

3. Fahrenheit

**Step: 1** The S.I unit of temperature is Kelvin . One unit can be converted into another using the proper conversion factor.

**Step: 2 ** The conversion factor to convert temperature from degree Celsius to Kelvin is,

...... (1)

**Step: 3 ** The conversion factor to convert temperature from degree Celsius to Fahrenheit is,

...... (2)

**Solution:**

**Step: 1** The given temperature value is .

**Step: 2** Substitute for in equation (2) to calculate the temperature in Fahrenheit scale.

Therefore, 90 degrees Celsius in Fahrenheit is.

**Common mistake:**

** **

Use correct formula to calculate the temperature in Fahrenheit scale.

**Similar problems:**

** **

**Question:**

** **

**1. How much is 22 degrees Celsius in Fahrenheit?**

** **

**Solution:**

**Step: 1** The given temperature value is .

**Step: 2 **Substitute for in equation (2) to calculate the temperature in Fahrenheit scale.

Therefore, 22 degrees Celsius in Fahrenheit is .

**Common mistake:**

** **

Use correct formula to calculate the temperature in Fahrenheit scale.

**Question:**

** **

**2. How much is 34 degrees Celsius in Fahrenheit?**

** **

**Solution:**

**Step: 1** The given temperature value is .

**Step: 2** Substitute for in equation (2) to calculate the temperature in Fahrenheit scale.

Therefore, 34 degrees Celsius in Fahrenheit is .

**Common mistake:**

** **

Use correct formula to calculate the temperature in Fahrenheit scale.

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