Answer:
0.8325 cubic yards.
Explanation:
The dimensions of each footings is given by 2.5 feet by 1.5 feet by 1 foot.
{Because 2'6" ≡ 2.5' ≡ 2.5 feet, 1'6" ≡ 1.5' ≡ 1.5 feet and 12" ≡ 1' ≡ 1 foot}
So, volume of each footing = 2.5 × 1.5 × 1 = 3.75 cubic feet.
Therefore, the total volume of 6 footings is (3.75 × 6) = 22.5 cubic feet.
Now, we know that 1 cubic foot is equivalent to 0.037 cubic yards.
So, 22.5 cubic feet is equal to 0.8325 cubic yards.
Therefore, 0.8325 cubic yards of concrete are needed to pour 6 footings. (Answer)