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.

Kubad

Bedka xaddidan:

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

Mugga:

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

Kubad la dhex-dhigay Dhululubo.

Qaacidada

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