Matematika

Pertanyaan

tolong jawab nomor 6-no 10
tolong jawab nomor 6-no 10

2 Jawaban

  • 6) L1 = p × l = 15 × 47 = 705 cm²
    L2 = p × l = 38 × 35 = 1330 cm²
    Lttl = 705 + 1330 = 2035 cm²

    7) no 7 gak keliatan ukurannya

    8) L1 = s × s = 36 × 36 = 1296 cm²
    L2 = ½ × a × t = ½ × (28 + 36) × (60 - 36) = ½ × 64 × 24 = 768 cm²
    Lttl = 1296 + 768 = 2064 cm²

    9) L1 = s × s = 26 × 26 = 676 cm²
    L2 = ½ × a × t = ½ × (26 + 9 + 9) × (82 - 26) = ½ × 44 × 52 = 1144 cm²
    Lttl = 676 + 1144 = 1820 cm²

    10) L1 = ½ × (a + b) × t = ½ × (34 + 18 + 18) × (65 - 16) = ½ × 70 × 49 = 1715 cm²
    L2 = p × l = 18 × 65 = 1170 cm²
    Lttl = 1715 + 1170 = 2885 cm²
  • No.6
    L1= 47×15=705
    L2=38×35=1330
    L gabungan=705+1330=2035cm2

    No.8
    Lp=36×36=1296
    Lsegitiga= a×t÷2=(36+28)×(60-36)÷2
    =64×24÷2=768cm2

    No.9
    Lp=26×26=676
    Lsegitiga=(9+26+9)×(82-26)÷2
    =44×56÷2=1232cm2

    No.10
    Lpersegipanjang=18×65=1170
    Lpersegi=a×t÷2=(65-16)×34÷2
    =49×34÷2=833cm2