Kegle

\( O_A = \pi \cdot r \cdot s \)

\( A = \pi \cdot r \cdot \left( s + r \right) \)

\( V = \frac{1}{3} \cdot \pi \cdot r^2 \cdot h \)

\( u = topvinklen \)

\( s = sidelngden \)

\( h = hjden \)

\( r = radius \)

Kegle - udfoldet

\( k = 2 \cdot s \cdot \sin \left( \frac{v}{2} \right) \)

\( v = \sin \left( \frac{u}{2} \right) \cdot 360^\circ = 360^\circ \cdot \frac{r}{s} \)

\( s = sidelngden \)

\( v = udsnitsvinklen \)

\( u = \text{Se kegle ovenfor} \)

\( r = \text{Se kegle ovenfor} \)