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10 March, 18:39

How many grains of sand are there in 7200kg of sand?

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  1. 10 March, 18:46
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    Hello,

    We can say that a grain of sand weighs 0.0006g.

    7200kg=7200000g

    7200000/0.0006=7.2*10^ (6) / 6*10 (-4) = 1.2*10^ (10)

    So, you have 12000000000 (or 1.2*10^ (10)) grain of sand in 7200kg of sand.
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