Matematika

Pertanyaan

tolong Bantu jawab y
tolong Bantu jawab y

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2 Jawaban

  • L = ½ × a × t
    54 = ½ × 9 × t
    54 × 2 = 9t
    108 = 9 t
    t = 12

    PQ = √ ( PQ² + PR²)
    = √ ( 9² + 12² )
    = √ ( 81 + 144 )
    = √225
    = 15 cm

  • luas segitiga = ½×a×t
    54 = ½×9t
    108 = 9t
    t = 108/9
    t = 12

    panjang QR = √12²+9² = √144+81 = √225 = 15cm

    semoga membantu

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