40 fathoms is 240 feet.
40-feet deep
40 to 50 feet
27 inches deep.
On average, 40 feet.
A hole 40 inches deep by 12 inches wide has a volume of: 2.62 cubic feet.
100 x 40 = 4000 sq ft (4000ft2).
17,953.2 gallons
hi
Width of hole: 6510/(40*10.6) = about 15 feet to the nearest integer
That depends on how deep you want the top soil! 5' X 8' = 40 square feet. If you want it 1' deep you would need 40 Cubic Feet, 3" deep you would need 10 cubic feet of top soil.
It was 363 miles long, 4 feet deep, and 40 feet wide.
800 C feet