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Old 12-21-2014, 01:59 PM   #2 (permalink)
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7.3 pounds per gallon, 55 pounds per cubic foot.

68 trillion X 7.3 = say 500 trillion pounds (rounded off)

500 tp / 55 (per cu-ft)= 9 trillion cubic feet

1 cubic mile is 147,197,952,000 cubic feet

9,000,000,000,000 / 147,197,952,000

roughly 1323 cubic miles or a cube of 11X11x11 miles.

any corrections for gross discrepancey?

doesn't seem like a huge number considering?

regards
mech
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