Final answer:
To calculate the number of cubic yards of concrete needed to make a cement floor, convert the dimensions to the same unit and then calculate the volume of the floor. In this case, the answer is 2 cubic yards.
Step-by-step explanation:
To calculate the number of cubic yards of concrete needed to make a cement floor, we need to convert all the dimensions to the same unit.
To calculate the volume, we multiply the length, width, and height together.
In this case, the dimensions are given as 9 feet by 12 feet by 6 inches. To convert inches to feet, we divide by 12.
Therefore, the dimensions become 9 feet by 12 feet by 0.5 feet.
Now we can calculate the volume by multiplying the dimensions together: 9 feet * 12 feet * 0.5 feet = 54 cubic feet.
Since there are 27 cubic feet in a cubic yard, we can divide 54 cubic feet by 27 to find the number of cubic yards needed.
Therefore, the answer is 54 cubic feet / 27 cubic feet per cubic yard = 2 cubic yards.