tolong bantu dong,rumusnya aja deh gapapa,matematika.

V air yang naik = V tabung
V air yg naik = V bandul
πr²t = 1/3πr²t
(π dicoret karna sama)
r²t = 1/3r²t
5 cm.5 cm.t = 1/3.4cm.4cm.9cm
25 cm².t = 48 cm³
t kenaikan air = 48 cm³: 25 cm²
t kenaikan air = 1,92 cm
(A)