int main() {
    // Deklarasi variabel
    float panjang, lebar, tinggi, luas_permukaan;
 
    // Input nilai panjang, lebar, dan tinggi
    printf("Masukkan nilai panjang: ");
    scanf("%f", &panjang);
    printf("Masukkan nilai lebar: ");
    scanf("%f", &lebar);
    printf("Masukkan nilai tinggi: ");
    scanf("%f", &tinggi);
 
    // Hitung luas permukaan
    luas_permukaan = 2 * (panjang * lebar + lebar * tinggi + panjang * tinggi);
 
    // Tampilkan hasil
    printf("Luas permukaan balok adalah: %.2f\n", luas_permukaan);
 
    return 0;
}

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