tolong bantu waktuku 25 menit lagi setor
Jawaban:
3. sudut keliling = ½ x sudut pusat
sudut keliling = ½ x 120° = 60°
4. diket : r = 7cm
a) keliling lingkaran = 2ㅠr = 2 x 22/7 x 7 = 44 cm
b) luas lingkaran = ㅠr² = 22/7 x 7 x 7 = 154 cm²
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