jari-jari = 21 cm
keliling lingkaran = 132cm
semoga membantu
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——————- X Keliling lingkaran
360 derajat
= 60derajat
——————- X keliling lingkaran
360 derajat
Kalau kurang ngerti bilang aja
jari-jari = 21 cm
keliling lingkaran = 132cm
semoga membantu