160 square feet 6" deep how many yards of gravel

160 * .5 = 80 cubic feet

1 cubic foot = 0.037037037 cubic yards

So multiply the last value by 80.

160ft^2 * 1/2 ft * (1yd/3ft)^3 = 160/54 yd^3

To calculate the number of yards of gravel needed, you would need to convert the dimensions from feet to yards. Here are the steps:

1. Convert the depth from inches to feet: Since there are 12 inches in a foot, dividing 6 inches by 12 will give you the depth in feet.
6 inches ÷ 12 inches/foot = 0.5 feet

2. Calculate the volume of the gravel in cubic feet: Multiply the area (in square feet) by the depth (in feet).
Volume = Area × Depth
Volume = 160 square feet × 0.5 feet = 80 cubic feet

3. Convert the volume from cubic feet to cubic yards: Since there are 27 cubic feet in a cubic yard, divide the volume (in cubic feet) by 27 to get the volume in cubic yards.
Volume (cubic yards) = Volume (cubic feet) ÷ 27
Volume (cubic yards) = 80 cubic feet ÷ 27 = 2.96 cubic yards

Therefore, you would need approximately 2.96 cubic yards of gravel.