**Measurement – Temperature**

Temperature is defined to check how much the object is hot or cold.

**There are two units to define the temperature:**

**For normal body, temperature is = 37°C = 98.6°F**

Where, C = Celsius and F = Fahrenheit

**Relation between Celsius and Fahrenheit:**

This formula will be used in most of the questions of measurement of temperature where we need to convert C into F or vice versa.

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**Example 1: **Convert 20°C to Fahrenheit.

Solution: We know that,

Therefore, Temperature in °F = = 36 + 32 = 68°F

**Example 2:** Convert 37°F into Celsius.

Solution: We know that,

Therefore = 2.78°C

**Exercise**

Question1: Convert the following temperature given in Celsius scale into Fahrenheit scale

- 25°C
- 0°C

- 3°C

- 65°C
- 20°C

Answer: i) 77°F ii) 32°F iii) 104.54°F iv) 149°F v) 68°F

Question 2: Convert the following temperature given in Fahrenheit scale into Celsius scale

- 200°F
- 175°F

- 185°F

- 158°F
- 68°F

Answers: i) 93.33°C ii) 79.44°C iii) 85°C iv) 70°C v) 20°C

**Recap**

- There are two scales to measure temperature i.e. Celsius and Fahrenheit.
- The normal body temperature is 98.4°F or 37°C
- The device used to check body temperature is called thermometer.
- Important Formula:

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