Pallo

Pinta-ala A = 4 pi r².
Tilavuus V = (4/3) pi r³.

Sektorin tilavuus V_s = (2/3) pi r²h = (2/3) pi r³ (1 - cos a) = V_pallo hav a.

Kalotin pinta-ala A_k = 2 pi rh = 2 pi r² (1 - cos a) = A_pallo hav a.