[Prince Charon]

Originally Posted by Captain Joy

This wasn't immediate obvious to me, so I thought I'd run the numbers for you doubters.

Area of a cylinder = pi•r^2 • height

In our case, the radius, r = ½y
and height = 4y
where y = 1 yard

So, pi•(y/2)^2•4y = pi • (y^2 / 4) • 4y = pi • y^3 • 4 / 4 = pi•y^3
= 3.14 square yards

I'm surprised it's so much less than the hexagon value.

Did you mean cubic yards, there?