Final answer:
The volume of the pyramid is 30 cubic yards.
Step-by-step explanation:
To find the volume of a pyramid, we use the formula V = Ah/3, where A is the area of the base and h is the height.
In this case, the base is a square with sides measuring 3 yards.
The area of a square is found by squaring the length of its side, so the area of the base is 3^2 = 9 square yards.
The height is given as 10 yards.
Plugging these values into the formula, we get V = 9 x 10/3 = 30 cubic yards.
Therefore, the volume of the pyramid is 30 cubic yards.