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L.O = 3850
ditanya : r...?
jawab :
L.O = (π)(r)^2
r^2 = L.O / π
r = √(L.O / π)
r = √ (3850 / 22/7 )
r = √(3850×7/22)
r = √(26950/22)
r = √(1225)
r = 35 cm
dit:jari-jari...?
dijwb:35
a.35