Is 0.00000001380 hundredweight as heavy as a Grain of Sand?
It's about one-tenth as heavy as a Grain of Sand
The weight of a Grain of Sand is about 0.0000000970 hundredweight.
(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.0000000970 hundredweight. 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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