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kalo yg tengah caranya:
<ABE, <ACE, <ADE = sudut keliling = 96/3 = 32 cm
<AOE = sudut pusat. Sudut pusat 2x sudut keliling. Jadi, <AOE = 2 X 32 = 64 °
Begitru kurang lebih. :)
<ABE=<ACE=<ADE = sudut keliling
sudut keliling= 96:3 = 32
sudut keliling= 1/2 sudut pusat
32 = 1/2 sudut pusat
32 x 2 = sudut pusat
sudut pusat = 64 (c)