Jawab soal ini dengan cara yadan jawab 4 soal yang ditandai
Jawaban:
La = 2 × (l × p + l × t + p × t)
v = p × l × t
2. p = 10 , l = 6 , t = 2
La = 2 × (6 × 10 + 6 × 2 + 10 × 2)
La = 2 × ( 60 + 12 + 20 )
La = 2 × 92
La = 184 cm²
v = p × l × t
v = 10 × 6 × 2
v = 120 cm³
3. p = 12 , l = 8 , t = 4
La = 2 × ( 8 × 12 + 8 × 4 + 12 × 4 )
La = 2 × ( 96 + 32 + 48 )
La = 2 × 176
La = 352 cm²
v = 12 × 8 × 4
v = 384 cm³
6. v = 540 , p = 10 , t = 3 , l = ….
540 = 10 × l × 3
540 = 30 × l
540 ÷ 30 = l
18 = l
La = 2 × (18 × 10 + 18 × 3 + 10 × 3)
La = 2 × ( 180 + 54 + 30)
La = 2 × 264
La = 528
9. v = 960 , l = 8 , t = 10 , p =….
960 = p × 8 × 10
960 = p × 80
960 ÷ 80 = p
12 = p
La = 2 × ( 8 × 12 + 8 × 10 + 12 × 10 )
La = 2 × ( 96 + 80 + 120 )
La = 2 × 296
La = 592