Joseph Michael Tay's answer to Shermaine Low's Secondary 2 Maths question.

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Joseph Michael Tay
Joseph Michael Tay's answer
30 answers (Tutor Details)
1st
First convert 1cm to 1cmsquare (1cm x 1cm)
Next convert km to kmsquare(0.3km x 0.3km)
Then divide by the area given and you get your answer