Question

If the level of water raises from 60 cm${}^3$ to 80 cm${}^3$ on placing a stone x into a measuring jar, then the volume of the stone is ______ litre.

Answer 1

According to the archimedes principle, the volume of the object in liquid is equal to the volume of the liquid being displaced by it.

Therefore,the volume of the stone=(80-60) ${cm}^3$=20${cm}^3$

1 $m^3$=1000 litre=100x100x100${cm}^3$

1${cm}^3$=(1000/1000000)litre=(1/1000) litres

20${cm}^3$=20/1000 litres=0.02 litres