Question

Sebuah mangkok beebentuk belahan bola. mangkok tersebut berisi 486 phi cm kubik. berapa diameternya

Answer 1

Volum = 1/2 x4/3 x π x r³
486 π = 2/3 x π x r³
486    = 2/3 x r³
486 x 3/2 = r³
 729  = r³
∛729 = r
   9  = r
diameternya
d = 2 x r
  = 2 x 9
  = 18 cm

Answer 2

V 1/2 bola = 1/2 x 4/3 πr³
486 π cm³ = 4/6 π r³
486 cm³ = 2/3 r³
r³ = 486 x 3/2
r³ = 729
r = ∛729
r = 9 cm
d = 2r
d = 2 x 9
d = 18 cm