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Jawab:
1. Volume kubus = s × s × s
= 8 × 8 × 8
= 512 cm³
Luas kubus = 6 × s × s
= 6 × 8 × 8
= 6 × 64
= 384 cm²
2. Volume balok = p × l × t
= 15 × 8 × 10
= 1.200 cm³
Luas balok = 2(pl + pt + lt)
= 2 × ( 15 × 8 ) + ( 15 × 10 )
+ ( 8 × 10 )
= 2 × ( 120 + 150 + 80 )
= 2 × 350
= 700 cm²
3. Volume balok = p × l × t
= 10 × 6 × 5
= 300 cm³
Luas balok = 2(pl + pt + lt)
= 2 × ( 10 × 6 ) + ( 10 × 5 )
+ ( 6 × 5 )
= 2 × ( 60 + 50 + 30 )
= 2 × 1.400
= 2.800 cm²
4. Volume tabung = πr² × t
= 22/7 × 14 × 14 × 20
= 616 × 20
= 12.320 cm³
Luas tabung = 2πr ( t + r )
= ( 2 × 22 /7 × 14 ) × ( 20
+ 14 )
= 88 × 34
= 2.992 cm²
5. Volume tabung = πr² × t
= 3,14 × 10 × 10 × 30
= 314 × 30
= 9.420 cm³
Luas tabung = 2πr ( t + r )
= ( 2 × 3,14 × 10 ) × ( 30
+ 10 )
= 62,8 × 300
= 18.840 cm²
Penjelasan dengan langkah-langkah:
Semoga Membantu......
JADIKAN JAWABAN TERBAIK yaa........!!!
Okk
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