NGA WUEN SI's answer to Ashley Lim's Secondary 2 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
NGA WUEN SI
Nga Wuen Si's answer
5 answers (Tutor Details)
A point at 0, as we always start from the 0cm, and B point at 3 so is 3cm, hence from A to B is 3cm