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Lpb:376cm2
P:10cm
L:6cm
Dit:
Tinggi?
Jawab
Luas Permukaan = 2(pl + pt + lt)
376=2(10.6 + 10.t + 6.t)
376=2(60+10t+6t)
376/2=60+16t
188-60=16t
128=16t
t=128/16
t=8cm
Tingginya 8cm