Jika keliling sudut ABC = 84 cm perbandingan masing - masing panjang sisi a:b::c = 4 :3 : 5. Hitunglah panjang sisi - sisi, a,b, dan c ! Gambar Bangun berbentuk segitiga siku siku
fianisaicha
A = 4/12 × 84 cm = 28 cm b = 3/12 × 84 cm = 21 cm c = 5/12 × 84 cm = 35 cm
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Liechun
A. Sisi a = (4/3+4+5)x84 = 4/12x84 =4x7 =28 B sisi b = (3/3+4+5)x84 = 3x7 =21 C. Sisi c = (5/3+4+5)x84 = 5x7 =35
b = 3/12 × 84 cm = 21 cm
c = 5/12 × 84 cm = 35 cm