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melati=75m²
kamboja=60m²
kolam=300-(100+75+60)
=300-235
=65m²
20 + 15 + 12 + X = 1
60
47 + X = 1
60
X= 1 - 17
1 60
X = 13 x 300 = 65. X= L. kolam
60