Matematika

Pertanyaan

tolong dong masa gak ada yang bisa sih...
tolong dong masa gak ada yang bisa sih...

1 Jawaban

  • 1.
    Trapesium 1 :
    L = ½ × JSS × t
    L = ½ × (30 + 24) × 5
    L = ½ × 54 × 5
    L = 27 × 5
    L = 135 cm²

    Trapesium 2 :
    L = ½ × JSS × t
    L = ½ × (8 + 30) × 6
    L = 38 × 3
    L = 114 cm²

    Gabungan :
    L = 135 cm² + 114 cm²
    L = 249 cm²

    2.
    Layang - Layang :
    L = ½ × d1 × d2
    L = ½ × (8 + 8) × (18 + 12 - 5)
    L = ½ × 16 × 25
    L = 8 × 25
    L = 200 cm²

    2 Trapesium :
    L = 2 × ½ × JSS × t
    L = (12 + 5) × 8
    L = 17 × 8
    L = 136 cm²

    Gabungan :
    L = 200 cm² + 136 cm²
    L = 336 cm²

    3.
    Layang - Layang :
    L = ½ × d1 × d2
    L = ½ × 20 × (4 + 4)
    L = 10 × 8
    L = 80 cm²

    2 Trapesium :
    L = 2 × ½ × JSS × t
    L = (4 + 10) × (25 - 8)
    L = 14 × 17
    L = 238 cm²

    2 Persegi Panjang :
    L = 2 × p × l
    L = 2 × 10 × 8
    L = 10 × 16
    L = 160 cm²

    Gabungan :
    L = 238 cm² + 160 cm² + 80 cm²
    L = 478 cm²

    4.
    Layang - Layang 1 :
    L = ½ × d1 × d2
    L = ½ × (26 + 8) × (6 + 6)
    L = ½ × 34 × 12
    L = 17 × 12
    L = 204 cm²

    Layang - Layang 2 :
    L = ½ × d1 × d2
    L = ½ × (26 + 12) × (6 + 6)
    L = ½ × 38 × 12
    L = 38 × 6
    L = 228 cm²

    Gabungan :
    L = 204 cm² + 228 cm²
    L = 432 cm²

    5.
    2 Layang - Layang :
    L = 2 × ½ × d1 × d2
    L = 12 × (4 + 4)
    L = 12 × 8
    L = 96 cm²

    Trapesium 1 :
    L = ½ × JSS × t
    L = ½ × ((20 - 4 - 4) + 20) × 9
    L = ½ × (12 + 20) × 9
    L = ½ × 32 × 9
    L = 16 × 9
    L = 144 cm²

    Trapesium 2 :
    L = ½ × JSS × t
    L = ½ × (14 + 12) × (12 - 9)
    L = ½ × 26 × 3
    L = 13 × 3
    L = 39 cm²

    Gabungan :
    L = 96 cm² + 144 cm² + 39 cm²
    L = 279 cm²

    Maaf Kalau Salah