Answer:
12π ft² or 37.7 ft²
Step-by-step explanation:
The volume of a cylinder is given by the area of its base multiplied by its height. If total volume is 216 π ft³ and the height is 18 ft, then the area of the base is:
[tex]V = Bh\\216\pi = B*18\\B= 12\pi \ ft^2[/tex]
The base has an area of 12π ft² or 37.7 ft².
