by **shill** » Fri Dec 23, 2005 6:28 am

First of all, 1.3 miles = 6 864 feet. Now, we must do a little algebra. We shall solve the volume of a cylinder for radius.

V=πrÂ²h

V/πh=rÂ²

r=sqrt(V/πh).

V=3800 ftÂ³

π=3.14159265

h=6864 ft

sqrt(V/πh)=0.41978626476509673741162227011684 ft

Therefore, the radius is approx. 0.42 ft, or 5.0 inches.

I make no claims to the correctness of this advice. Use your own judgement accordingly.