Final answer:
The volume of the square pyramid with side lengths of 7 yards and a height of 6 yards is 98 cubic yards.
Step-by-step explanation:
The volume of a square pyramid can be calculated using the formula V = (1/3) * A * h, where A is the area of the base and h is the height of the pyramid.
For a square pyramid with side lengths of 7 yards and a height of 6 yards, the area of the base can be calculated as A = s^2 = 7^2 = 49 square yards.
Plugging in the values into the formula, V = (1/3) * 49 * 6 = 98 cubic yards.