BANTU SAYA! 1. Dik = <AOB = 90derajat r = 21 cm Dit = Luas tembereng! Jawab?

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1 Jawaban

  • Luas Juring = 90/360 × Luas Lingkaran
    = 90/360 × 22/7 × 21 cm × 21 cm
    = 1/4 × 22/7 × 441 cm2
    = 346.5 cm2

    Luas Segitiga = 1/2 × a × t
    = 1/2 × 21 cm × 21 cm
    = 1/2 × 441 cm2
    = 220.5 cm2

    Luas Tambereng = Luas Juring - Luas Segitiga
    = 346.5 cm2 - 220.5 cm2
    = 126 cm2

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