Volume and Surface area of a Torus

Enter data in either the r or d fields and in either the R or D fields.
r
R
d
D


Volume =  
Surface Area =  

Formulas:

V = Volume
A = Surface Area
V = 2p2Rr2
V = 19.739Rr2
V = (p2/4) * Dd2
V = 2.4674Dd2
A = 4p2Rr
A = 39.478 * R * r
A = p2Dd
A = 9.8698 * D * d

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