Torus

• Torus (a three-dimensional figure) has a shape like a donut.

Torus Index

• Hole Radius of a Torus
  
• Surface Area of a Torus
  
• Volume of a Torus

 

 

 

 

 

Hole Radius of a torus formula
\(\large{ R_h = R - r  }\)
Symbol	English	Metric
\(\large{ R_h }\) = radius of the hole	\(\large{ in }\)	\(\large{ mm }\)
\(\large{ r }\) = radius of sphere	\(\large{ in }\)	\(\large{ mm }\)
\(\large{ R }\) = radius of center of sphere	\(\large{ in }\)	\(\large{ mm }\)

 

Surface Area of a torus formula
\(\large{ S = 4 \; \pi^2 \; R\; r    }\)
Symbol	English	Metric
\(\large{ S }\) = surface area	\(\large{ in^2 }\)	\(\large{ mm^2 }\)
\(\large{ \pi }\) = Pi	\(\large{3.141 592 653 ...}\)
\(\large{ r }\) = radius of sphere	\(\large{ in }\)	\(\large{ mm }\)
\(\large{ R }\) = radius of center of sphere	\(\large{ in }\)	\(\large{ mm }\)

 

Volume of a torus formula
\(\large{ V = 2 \; \pi^2 \; R\; r^2  }\)
Symbol	English	Metric
\(\large{ V }\) = volume	\(\large{ in^3 }\)	\(\large{ mm^3 }\)
\(\large{ \pi }\) = Pi	\(\large{3.141 592 653 ...}\)
\(\large{ r }\) = radius of sphere	\(\large{ in }\)	\(\large{ mm }\)
\(\large{ R }\) = radius of center of sphere	\(\large{ in }\)	\(\large{ mm }\)