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Panjang bayangan siswa = 50 cm = 0.5 m
Panjang bayangan menara= 10 m
Tinggi menara = X
solusi
1.5 : 0.5
X : 10
di kali silang
10 x 1.5=0,5X
15 = 0,5x
X = 15: 0,5
X= 30 m