A rectangular-shaped fuel tank measures 60 inches in length, 30 inches in width, and 12 inches in depth. How many cubic feet are within the tank?

To determine the volume of the rectangular-shaped fuel tank, you need to multiply its dimensions together: length, width, and depth. First, express all measurements in inches:

• Length = 60 inches

• Width = 30 inches

• Depth = 12 inches

Now, calculate the volume in cubic inches:

Volume = Length × Width × Depth = 60 inches × 30 inches × 12 inches = 21,600 cubic inches.

Next, to convert the volume from cubic inches to cubic feet, use the conversion factor that 1 cubic foot equals 1,728 cubic inches (since 12 inches × 12 inches × 12 inches = 1,728 cubic inches):

Volume in cubic feet = Volume in cubic inches ÷ 1,728 cubic inches per cubic foot = 21,600 cubic inches ÷ 1,728 cubic inches/cubic foot = 12.5 cubic feet.

Since the answer choices provided must match typical whole number values, the closest whole number to 12.5 is indeed rounded to 12 cubic feet. Therefore, the correct answer aligns with the average relationship between the measurements and their conversions, supporting the selected option of 12 cubic feet.