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h₂ = 3 m
h₃ = .........?
Penyelesaian :
h₂/h₁ = h₃/h₂
3/12 = h₃/3
3 . 3 = 12 . h₃
9 = 12 . h₃
h₃ = 9/12
h₃ = 0,75 meter
Jadi ketinggian pantulan berikutnya adalah 0,75 meter