From SROYS@radiology.ab.umd.edu Fri Mar 10 08:50 MST 1995
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To: tesla@grendel.objinc.com
From: "SROYS"  <SROYS@radiology.ab.umd.edu>
Date:         Fri, 10 Mar 1995 10:34:40 EDT
Subject:      Re: Toroid surface area

>  Anybody got a formula to calculate the surface area of a toroid?

From CRC "Standard Mathematical Tables" book (they also have a nice 
little diagram): For a circular torus (toroid) where r = radius of outside 
ring, and R = radius from center of toroid to center of outside ring:
 
    Surface area = 4*(pi^2)*R*r
 
For your original toroid, R=5" and r=2"
For your new toroid, R=14" and r=2.5"
 
So the surface area of your new toroid is 3.5x that of your old toroid


Steven Roys (sroys@radiology.ab.umd.edu)


