Wiki User
∙ 2011-03-20 18:17:05There are 3 feet to a yard, so there are 9 (3 x 3) square feet to a square yard, and 27 (3 x 3 x3 ) cubic feet to a cubic yard.
The ditch measures 1 x 1 x 135 = 135 cubic feet, so that is 135/27 cubic yards = 5 cubic yards.
Wiki User
∙ 2011-03-20 18:17:05about 71 cubic metres of gravel i think
218.75 cubic feet or 8.1 cubic yards
Gravel is bought in cubic quantities, or by weight. You ask "to fill" but you only give a square measure. The volume of gravel required wil depends on the depth you wish the gravel to be. To fill 81 square metres to a depth of 5 cm would require 4.05 cubic metres of material.
it depends how thickly you lay it.
Volume required = pi*r2*h = pi*32*16 = 452.4 cubic feet
1 square foot = 144 square inches, so 100 square ft = 14400 sq inches. Multiply be 3 = 43200 cubic inches. I believe gravel is normally sold by the cubic yard. 1 cubic yard = (36 in)3 = 46656 cubic inches. So 43200/46656 = 0.926 cubic yards
16 cubic yards
using 3/4" rock fill 257' by 155' hole 2' deep
Another word for a deep ditch that is dug around a castle is a moat. You could call it a trench, or you could fill it full of water and call it a moat.
32
23 yards
4 inches = 1/3 foot27 cubic feet = 1 cubic yardVolume = 80 x 1/3 x 1/3 = 88/9 cubic feet = 0.329 cubic yard (rounded)