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b=?
P₁=48²=2304cm₂
P₂=b²
P₃=4b²
Ps=P₁
Ps=5P₃+4P₂
P₁=5P₃+4P₂
P₁=5*4b²+4b²
P₁=20b²+4b²=24b²
2304cm²=24b²//24
b²=96
b=√96=√16*6=4√6
V=c³
c=2b=8√6
V=(8√6)³=512*6√6=3072√6[cm³]
To pudełko będzie miało objętość 3072√6 cm³
Proszę o naj :)