If you are not sure how much soil you will need for the job measure the length x width x Depth = Total required

10mtrs x 6mts x 0.05mm (50mm) = 3m3

Coverage for Stone and Mulches

(These figures are approximate only)
Sand, Rainbow Stone, Pea Gravel, Crushed Brick, Blue Metal, Limestone Fines
= 1m3 @ 100mm Thick = 10m2
= 1m3 @75mm Thick = 13m2
= 1m3 @50mm Thick = 20m2

Mulches:
= 1m3 @100mm Thick = 10m2
=1m3 @75mm Thick = 13m2

1 Trailer Load = 0.7 Cubic Metres (Approx)
1 Cubic Metre = 1 1/2 Trailer Loads (Approx)
eg: 3 Trailer Loads = 2 Cubic Metres