Luas permukaan sebuah kubus adalah 54 cm2. Panjang rusuk kubus tersebut adalah . . . cm.
A. 2
B. 3
C. 4
D. 9

Oleh: USER4762
30 Agustus 2025 matematika 5 menit baca
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Pertanyaan

Grade: Education Mata Pelajaran: matematika
Luas permukaan sebuah kubus adalah 54 cm2. Panjang rusuk kubus tersebut adalah . . . cm.
A. 2
B. 3
C. 4
D. 9
Ditanyakan oleh:
134 Dilihat 134 Jawaban

Jawaban (134)

Jawaban Terbaik
(127)
L.perm.kubus = 54 cm²
6 x s x s = 54
6 x s² = 54
s² = 54/6
s² = 9
s = √9
s = 3 cm (Opsi B)
Dijawab pada tanggal 30 Agustus 2025
(229)
luas permukaan kubus = 6s.s
54. = 6s.s
54 ÷ 6= s.s
9. = s.s
3 =s
B. 3
Dijawab pada tanggal 30 Agustus 2025

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