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Assume: 64

**grains of rice**= 1 gram. 1billion**grains**weight = 15,625kg, 34447lb, 15.63 tonnes,17.22 UStons. Assume: density: 1.22l/kg. 1 billion**grains**volume =19 cubic meters.

Also question is, how much does a grain of rice weigh?

0.029 grams

^{19}

**grains of rice**, which is about 4,000 timesless than thenumber of

**grains**of sand in the

**world**onthe basis ofour calculations above. To bring the number of

**grains ofrice**up to our number for the

**grains**ofsand, you wouldneed a chessboard with 76 squares instead of64.

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 around48**grains**. So a **cup** of 180 grams has 8640 **grainsofrice**.