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d.pdgambar = 28 cm
r. pdgambar = 14 cm
K.pdgambar = πd = 22/7 x 28 = 88 cm
L.pdgambar = πr² = 22/7 x 14² = 616 cm²
d.sebenarnya = 28 x 1000 = 28.000 cm = 280 m
K.sebenarnya = 88 x 1000 = 88.000 cm = 880 m
L.sebenarnya = 616 x 1000² = 6.160.000 cm² = 61.600 m²