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Is 139.620 tons as heavy as a Grain of Sand?

It's about 30,000,000,000 times as heavy as a Grain of Sand
The weight of a Grain of Sand is about 0.00000000490 tons.
(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000000490 tons. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
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