KUNCI JAWABAN DAN PEMBAHASAN
1 C 6 A 11 C 16 B
2 B 7 B 12 B 17 C
3 C 8 A 13 A 18 D
4 B 9 C 14 B 19 A
5 D 10 B 15 D 20 B
1. = p × l × t
= 36 × 12 × 9
= 3.888 cm³
= r³
= 3 . 3 . 3
= 27 cm³ Jumlah kubus =
= 144 buah
2. r = √
= 9 cm
Lebar = 9 cm
Panjang = 2 × 9
= 18 cm Tinggi = × 18
= 6 cm
= p × l × t
= 18 × 9 × 6
= 972 cm³
3. = 1,5 × 1,5 × 1,5
= 3,375 m³
= 3.375.000 cm³ Waktu =
= 4.500 detik
= 75 menit
= 1 jam 15 menit
4. r = √
= 14 cm
Panjang bambu = 12 × 14
= 168 cm
5. Luas = 2(p × l) + 2(p × t) + 2(l × t)
= 2(20 × 12) + 2(20 × 8) + 2(12 × 8)
= 480 + 320 + 192
= 992 cm²
