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4396 = 2. 3,14 . 15. 15 . t
4396 = 1413 . t
t = 4396 / 1413
t = 3.12
kalau ga salah ya
4396=(2. 3,14 . 15²)+ (2.3,14.15.t)
4396=1413 + 94,2t
94,2t=4396-1413
t=2983/94,2
t=31⅔ cm
t=31,67 cm