Final answer:
The cylindrical silo with a diameter of 18 feet and a height of 4 feet can hold 324π cubic feet of water.
Step-by-step explanation:
The student is asking about the volume of water a cylindrical silo can hold. The silo has a diameter of 18 feet and a height of 4 feet. To calculate the volume, we use the formula for the volume of a cylinder, which is V = πr²h. Since the diameter is given, the radius r would be half of that, which is 9 feet (since radius is half the diameter). Substituting the values into the formula gives us V = π * 9² * 4, or simplified, V = 324π cubic feet. Therefore, the silo can hold 324π cubic feet of water.