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Assume: 64 grains of rice = 1 gram. 1billiongrains weight = 15,625kg, 34447lb, 15.63 tonnes,17.22 UStons. Assume: density: 1.22l/kg. 1 billion grainsvolume =19 cubic meters.
Also question is, how much does a grain of rice weigh?
0.029 grams
In respect to this, how big is a billion grains of sand?
That's about 100 billion grains of sand. Pileit10 meters (30 feet) high and you've got 1 trillion grainsofsand.
One cup of uncooked rice isabout175–185 grams. One gram of rice has around48grains. So a cup of 180 grams has 8640 grainsofrice.