Kubad

Kubad waa joomateri oo ay xaddido masaaxad ay dhammaan baraheedu u jiraan fogaan isl’eg bar cayiman ah oo loo yaqaan barta dhexe oo aan lahayn wax xagal ah.

Bedka xaddidan:

${\displaystyle A=4\pi r^{2}\,}$

Mugga:

${\displaystyle V={\frac {4\pi r^{3}}{3}}}$

Qaacidada

Habka Kubadda
Wareeg	${\displaystyle U\,=\,2\pi r{\color {OliveGreen}\ ={\frac {\mathrm {d} A_{\mathrm {PF} }}{\mathrm {d} r}}}}$
Baaxad	${\displaystyle A_{O}\,=\,4\pi r^{2}\,{\color {OliveGreen}\ ={\frac {\mathrm {d} V}{\mathrm {d} r}}}}$
Mug	${\displaystyle V\,=\,{\frac {4}{3}}\pi r^{3}=\int _{0}^{r}A_{O}\mathrm {d} r}$
Bedka Goobada	${\displaystyle A_{\mathrm {PF} }\,=\,\pi r^{2}=\int _{0}^{r}U\mathrm {d} r}$
Mugga Kubadda	${\displaystyle V_{\mathrm {KS} }\,=\,{\frac {h^{2}\pi }{3}}(3r-h)}$
Meelaha ay ka daboolantahay	${\displaystyle A_{\mathrm {KK} }\,=\,2rh\pi =2r^{2}\pi \left(1-\cos {\frac {\alpha }{2}}\right)}$
Waqtiga ay negaato	${\displaystyle J\,=\,{\frac {2}{5}}mr^{2}}$