A silo is a building shaped like a cylinder used to store grain. The diameter of a particular silo is 6.5 meters, and the height of the silo is 12 meters.

To calculate the volume of this silo, we need to use the formula for the volume of a cylinder:

V = πr^2h

Where:
V = volume
π ≈ 3.14159
r = radius
h = height

First, we need to find the radius of the silo, which is half of the diameter:

r = 6.5 / 2 = 3.25 meters

Now we can plug these values into the formula:

V = 3.14159 x 3.25^2 x 12
V ≈ 3.14159 x 10.5625 x 12
V ≈ 398.879 cubic meters

Therefore, the volume of the silo is approximately 398.879 cubic meters.