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Sudut dalam segi 12
= 360/12
= 30°
Ls = ½ bc sin A → b dan c = jari”
Ls = ½ * 8 * 8 * sin 30
= 32 x ½
= 16 cm²
L = 12 x
Ls = 12 x 16
Ls = 192 cm²
2.
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Kalo Jawabannya Membantu, Jangan Lupa kasih bintang 5-nya :)