To find the volume of a rectangular prism, you will use the formula:
V = l x w x h
V is the volume, l is the length, w is the width, and h is the height.
So we would multiply all the given measurements and find the volume but one of the measurements is given in inches instead of feet, which is what the answer should be in, cubic feet.
To convert inches to feet, divided inches by 12. Because one foot makes 12 inches, and 12 inches makes one foot. Just like the subs at Subway, a half footlong is 6 inches and a footlong is 12 inches. Now 27/12 is 2.25, so 2.25 ft is the measurement in feet. Now we can multiply all the measurements to get the volume.
V = l x w x h
V = 16 ft x 7 ft x 2.25 ft
V = 252 ft^3
Always remember to cube the solutions to volume and square the solutions to area.
Hope this helped!