Matematika

Pertanyaan

tolong dijawab dengan caranya ya pliss
tolong dijawab dengan caranya ya pliss

1 Jawaban

  • EF² = AB² + (AE - BF)²
    = (4 cm)² + (8 cm² - 5 cm²)
    = (4 cm)² + (3 cm)²
    = 16 cm² + 9 cm²
    = 25 cm²
    EF = √(25 cm²)
    = 5 cm

    Lp = L ABFE + L DCGH + L BCGF + L ADHE + L ABCD + L EFGH
    = (5 cm × 8 cm)/2 + (5 cm × 8 cm)/2 + (5 cm × 5 cm) + (5 cm × 8 cm) + (4 cm × 5 cm) + (5 cm × 5 cm)
    = 20 cm² + 20 cm² + 25 cm² + 40 cm² + 20 cm² + 25 cm²
    = 150 cm²