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tiang sebenarnya = 4m | bayangan tiang = 5m
pohon sebenarnya= 16 m | bayangan pohon =x
x/16 = 5/4 => x.4 = 16.5
4x = 80
x = 80:4 = 20
kurang lebih sih gitu
4x= 80m
x= 80m/4
x= 20m
jadi bayangannya adalah 20m :)