Hollow Ellipse

• Hollow ellipse (a two-dimensional figure) has two ellipses with a conic section or a stretched circle.
• The major axis is always the longest axis in an ellipse.
• The minor axis is always the shortest axis in an ellipse.

• Tags: Ellipse

Hollow Ellipse Index

• Area of a Hollow Ellipse
• Inner Semi-major Axis Length of a Hollow Ellipse
• Inner Semi-minor Axis Length of a Hollow Ellipse

 

 

 

Area of a Hollow ellipse formula
\( A_{area} \;=\; \pi \; ( a \; b - e \; f )  \)
Symbol	English	Metric
\( A \) = area	\( in^2 \)	\( mm^2 \)
\( a \) = length semi-major axis	\( in \)	\( mm \)
\( b \) = length semi-minor axis	\( in \)	\( mm \)
\( e \) = length inner semi-major axis	\( in \)	\( mm \)
\( f \) = length inner semi-minor axis	\( in \)	\( mm \)
\( \pi \) = Pi	\(3.141 592 653 ...\)

 

Inner Semi-major Axis Length of a Hollow ellipse formula
\( e \;=\; a - g \)
Symbol	English	Metric
\( a \) = length semi-major axis	\( in \)	\( mm \)
\( b \) = length semi-minor axis	\( in \)	\( mm \)
\( g \) = ring width	\( in \)	\( mm \)

 

Inner Semi-minor Axis Length of a Hollow ellipse formula
\( f \;=\; b - g \)
Symbol	English	Metric
\( a \) = length semi-major axis	\( in \)	\( mm \)
\( b \) = length semi-minor axis	\( in \)	\( mm \)
\( g \) = ring width	\( in \)	\( mm \)