Toobin Waa joomateri ay masaaxad saleedkiisu goobo tahay, masaaxada isku xirta salalkuna tahay Toobin Qaacidadaan waa Toobinta usamaysan Salkeeda sida Goobada r : Gacanka Salka. h : Joogga Toobinta. A : Bedka Salka. P : Wareega salka. V : Mugga Toobinta. g : Dheerer garaaf toobineed ee gooba quman ah. Bedka Bedka dusha sare ee toobin Goobeed quman = g P 2 = π r P {\displaystyle {\frac {gP}{2}}=\pi rP} Bedka salka toobinta = π r 2 {\displaystyle \pi r^{2}\,} Toobin goobeed quman haddii la gooyo ee barbarra la noqda waxaa ka dhalanaya : a A = k 2 h 2 {\displaystyle {\frac {a}{A}}={\frac {k^{2}}{h^{2}}}} Halka (a) Waa bedka gabalka la jaray, iyo (k) Fogaanta halka laga jaray madaxa. Mugga Mugga V {\displaystyle V} Jooga toobin h {\displaystyle h} Gacanka Salka r {\displaystyle r} iyo 1 3 {\displaystyle {1 \over 3}} Mugga dhulubo.