Final answer:
The volume of the pyramid is approximately 10.67 cubic yards.
Step-by-step explanation:
To find the volume of a pyramid, you can use the formula V = (1/3) * A * h, where A is the area of the base and h is the height. In this case, the base of the pyramid is a square with sides measuring 4 yards, so its area is 4 * 4 = 16 square yards. The height of the pyramid is given as 6 feet, but we need to convert it to yards first. Since there are 3 feet in 1 yard, the height is 6 / 3 = 2 yards.
Now we can calculate the volume: V = (1/3) * 16 * 2 = 10.67 cubic yards. So, the volume of this pyramid is approximately 10.67 cubic yards.