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lebar sebenarnya = 7 * 1000= 7000 cm
JADI LUAS SEBENARNYA = P * L
= 9000 * 7000
= 63 000 000 cm²
L = 7 x 1000 = 7000 cm²
Luas Sebenarnya = 9000 x 7000 = 63000000 cm² = 6300 m²