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Weight of paper

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meglet | 11:57 Tue 17th Jul 2007 | Science
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If an A4 sheet of paper measures 210mm x 297mm and weighs 80 grams per square metre, what is a the weight of am A4 ream (500 sheets) of paper please?

Many thanks
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Avatar Image JjP
It will be almost 2.5kg

0.210m x 0.297m = 0.06237m2
0.06237m2 x 500 = 31.185m2
31.185m2 x 80g = 2494.8g = 2.4948kg
12:01 Tue 17th Jul 2007
Avatar Image meglet
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Thanks. While you're here....

I need to find out how many boxes of A4 paper are in a tonne. So presumably:

1 ream = 2.5kg
1 box = 5 reams = 12.5kg
1000kg / 12.5kg = 80 boxes

Right?
12:12 Tue 17th Jul 2007

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