Dhululubo

Dhululubo Waa joomateri ay masaaxad saleedyadiisu yihiin goobo, taa oo masaaxada isku xirta salalku tahay laydi golxo leh Bedka xaddidan

$A = 2\pi r^2 \,$ + $2\pi rh \,$

Dhululubo

Habka loo cabiro

(r) waa dhexroorka salka

(h) waa jooga dhululubada

(A) Waa bedka salka $A = \pi r^2 \,$

(P) Wareega Salka waxaana loo cabiri karaa sidaan $P = 2\pi r \,$

Bedka

• BedKa dhinaca = Wareega Salka × Jooga = $P \times h$
• Bedka Salka Sare = $\pi r^2\,$
• Bedka Salka Hoose = $\pi r^2 \,$
• Bedka Guud = $( 2 \times \pi r^2 ) + (P \times h)$

Mugga

Dhululubo socod waniin

Mugga waxaa lagu helaa:

(V) = $\pi r^2h \,$

Iyadoo la isku dhufto Bedka salka iyo jooga = $A \times h$

Sidoo kale Habkaan

Adigoo sidaan u cabira = $\pi \times \int_0^h[d(x)]^2 dx$