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    Hi, for any trapezium questions, it normally doesn't specify what sf you need to round your answer to , for example the 2016 January C12 paper Q5. however this is the answer on the mark scheme 0.4885176576… awrt 0.49.
    How do I know that I need to round it to 2sf when it doesn't specify and the values in the table are all to 3 dp? Thanks
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    it is safe to always just round it to 3sf?
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    (Original post by coconut64)
    it is safe to always just round it to 3sf?
    Yes. Final answer to 3 s.f but all intermediary working as exact as possible.
 
 
 
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Updated: May 24, 2016
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