F.2 maths

👨🏻‍🏫 學術台數學

kaming0614

2007-11-17 10:06 pm

If AB = 5.1cm(correct to the nearest 0.1cm) and CD = 5.1cm(correct to the nearest 0.1cm).Are AB and CD the same in length?WHY???

回答 (2)

chiu

2007-11-17 10:21 pm

✔ 最佳答案

no,,,because they's length are correct to the nearest 0.1cm

(i.e. Pershap AB=5.12 cm , CD= 5.11 cm ....

參考: me

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2007-11-17 10:21 pm

Of course not.
5.1cm is correct to the nearest 0.1cm,
that mean 5.1 can be 5.05 to 5.14
the error:5.14-5.05=0.09cm

So,AB and CD may not be same.

參考: Me

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