Boy Mow Chau's answer to H.'s Primary 6 Maths Measurement Singapore question.

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Boy Mow Chau
Boy Mow Chau's answer
317 answers (Tutor Details)
1st
using guess & check, can find ...
side of larger square = 14.5 cm
side of smaller square = 8.5 cm
giving area of ABCD = 14.5 x 8.5 = 123.25 cm2

alternatively, the solution on left, shows how area of ABCD can be found without knowing the length & width of ABCD.