how deep would a layer o f 2 billion tons topsoil weighing 2500 lb./cu yd spread over an area of 426371 sq mi

Answer 1

2 X 10^9 tons of topsoil at 2000 lbs/ton becomes
4 X 10^12 lbs of topsoil at 2500 lb/yd3 becomes
1.6 X 10^9 yd3

4.26371 X 10^5 mi2 becomes
1.321 X 10^12 yd2

dividing the area in square yards into the volume in cubic yards gives a depth of 1.211 X 10^-3 yd or .0436 inches in depth

Answer 2

Rscanner's math checks. Give him 10 points.

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