Andrea's answer to Emily's Primary 4 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Andrea
Andrea's answer
2 answers (A Helpful Person)
1st
Liquids have fixed volume but not fixed shape, take note in (b) water level increase in cup but decrease outside cup. This maintains the volume of water so the total in basin will be the same despite the cut.