luas lingkaran=r×r
9.856cm2=22/7×r2
9.856×7:22 =r2
3.136cm2=r2
r=3.136
r=56 cm
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luas lingkaran=r×r
9.856cm2=22/7×r2
9.856×7:22 =r2
3.136cm2=r2
r=3.136
r=56 cm