Matematika

Pertanyaan

Volume bola yang berdiameter 21 cm adalah? Phi=22/7

2 Jawaban

  • rusuk = 21/2

    Volume = 4/3 x phi x r³
    Volume = 4/3 x 22/7 x 21/2 x 21/2 x 21/2
    Volume = 4851 cm³
  • Volume = 4/3 x phi x (D/2) x (D/2) x (D/2)
    Volume = 4/3 x 22/7 x (21/2) x (21/2) x (21/2)
    Volume = 4/3 x 22 x (3/2) x (21/2) x (21/2)
    Volume = 4 x 11 x (1/1) x 21/2 x 21/2
    Volume = 11 x 21 x 21
    Volume = 4,851

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