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Sebuah kubus memiliki panjang rusuk 6 cm. Berapa luas permukaan kubus tersebut?

Rani Maharani

Soal:

Sebuah kubus memiliki panjang rusuk 6 cm. Berapa luas permukaan kubus tersebut?

Jawaban:

Diketahui:

Panjang rusuk kubus = 6 cm

Dicari:

Luas permukaan kubus

Pembahasan:

Rumus luas permukaan kubus adalah L = 6s², dimana s adalah panjang rusuk kubus. Maka:

L = 6 × (6)²

L = 6 × 36

L = 216 cm²

Jadi, luas permukaan kubus tersebut adalah 216 cm².

Keterangan:

Dalam menghitung luas permukaan kubus, perhatikan bahwa kubus memiliki 6 buah sisi yang sama luas. Oleh karena itu, untuk mendapatkan luas permukaan kubus, kita dapat mengalikan luas salah satu sisinya dengan 6.

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