Solve.

1. Convert the temperature 32˚F to the celcius scale. 

2. The temperature of a body is 68˚F. Convert it into Celsius(˚C). 

3. Convert boiling point of water (100˚C) to Fahrenheit scale. 

4. If you had a wooden block of mass 12 gms and dimensions 2 cm×3 cm× 1 cm, what would be its density.