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Secondary 1 chevron_right Maths chevron_right Singapore

can help with part b?

Date Posted: 3 months ago
Views: 60

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Shawn
Shawn's answer
110 answers (A Helpful Person)
1st
When using rounded off figures, NEVER use 3sf in your working. Use a minimum of 5sf. The answer of the height is exactly 45cm but because you used 3sf you got lower than 45 and have to round off to get the answer. Since both scenarios will have a constant pi, you can leave everything in terms of pi first as it’ll cancel out each other.