Luas Daerah Segitiga
½ × alas × tinggi
½ × 8 × 6
8/2 × 6
4 × 6
24 cm²
Jawaban:
C. 24
Penjelasan dengan langkah-langkah:
BANGUN DATAR SEGİTİGA SİKU²
AB = 8 cm
BC = 6 cm
AC = √(AB² + BC²)
AC = √(8² + 6²)
AC = √(64 + 36)
AC = √100
AC = 10 cm
Keliling ∆ ABC = 6 + 8 + 10
Keliling ∆ ABC = 24 cm
s = Keliling ∆ ABC
2
s = 24
s = 12 cm
Luas ∆ ABC = √(s(s–AB)(s–BC)(s–AC))
Luas ∆ ABC = √(12(12–8)(12–6)(12–10))
Luas ∆ ABC = √(12(4))(6)(2))
Luas ∆ ABC = √(2²×3 × 2² × 2×3 × 2)
Luas ∆ ABC = √((2²)² × 2² × 3²)
Luas ∆ ABC = √(4×2×3)²
Luas ∆ ABC = √(24)²
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Luas Daerah Segitiga
½ × alas × tinggi
½ × 8 × 6
8/2 × 6
4 × 6
24 cm²
Jawaban:
C. 24
Penjelasan dengan langkah-langkah:
BANGUN DATAR SEGİTİGA SİKU²
AB = 8 cm
BC = 6 cm
AC = √(AB² + BC²)
AC = √(8² + 6²)
AC = √(64 + 36)
AC = √100
AC = 10 cm
Keliling ∆ ABC = 6 + 8 + 10
Keliling ∆ ABC = 24 cm
s = Keliling ∆ ABC
2
s = 24
2
s = 12 cm
Luas ∆ ABC = √(s(s–AB)(s–BC)(s–AC))
Luas ∆ ABC = √(12(12–8)(12–6)(12–10))
Luas ∆ ABC = √(12(4))(6)(2))
Luas ∆ ABC = √(2²×3 × 2² × 2×3 × 2)
Luas ∆ ABC = √((2²)² × 2² × 3²)
Luas ∆ ABC = √(4×2×3)²
Luas ∆ ABC = √(24)²
Luas ∆ ABC = 24 cm²