Dhululubo Waa joomateri ay masaaxad saleedyadiisu yihiin goobo, taa oo masaaxada isku xirta salalku tahay laydi golxo leh Bedka xaddidan A = 2 π r 2 {\displaystyle A=2\pi r^{2}\,} + 2 π r h {\displaystyle 2\pi rh\,} Habka loo cabiro (r) waa dhexroorka salka (h) waa jooga dhululubada (A) Waa bedka salka A = π r 2 {\displaystyle A=\pi r^{2}\,} (P) Wareega Salka waxaana loo cabiri karaa sidaan P = 2 π r {\displaystyle P=2\pi r\,} Bedka BedKa dhinaca = Wareega Salka × Jooga = P × h {\displaystyle P\times h} Bedka Salka Sare = π r 2 {\displaystyle \pi r^{2}\,} Bedka Salka Hoose = π r 2 {\displaystyle \pi r^{2}\,} Bedka Guud = ( 2 × π r 2 ) + ( P × h ) {\displaystyle (2\times \pi r^{2})+(P\times h)}