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tinggi ali = 150 cm = 1,5 m
bayangan ali = 2m
bayangan gedung = 24 m
dit ; tinggi gedung (x) ?
dijawab :
1,5/2 = x/24
2x = 1,5 x 24
x = 36/2
x = 18 m
jadi tinggi gedung = 18 m