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Verified answer
Keliling lingkaran = 2phi r2 phi.r = 308 cm
2.22/7 .r = 308 cm
44/7.r = 308 cm
44.r = 2.156
r = 2.156/44
r = 49 cm
Verified answer
Keliling lingkaran =2*r*π =π*dd =308 : 22/7 = 308 * 7/22 =98
d=2*r
r = d/2
=98/2
=49