Sinceretutor's answer to Jackyoggy's Primary 6 Maths Measurement Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Sinceretutor
Sinceretutor's answer
19 answers (Tutor Details)
1st
Constant identity concept. In this case, it is the shaded area that is constant & must represent the same number of units in the square & rectange.

Ans: 630cm²