David Tan's answer to Uzma Batrisyia's Primary 6 Maths Measurement Singapore question.

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David Tan
David Tan's answer
24 answers (Tutor Details)
1st
b is the common side for both surfaces, so find the common factor for both 91 and 168 to get b. To do so list out all the possible factors for 91 and 168 and find the common factors for both numbers.