Oblicz Pc i V prostopadłościanu
a) a = 4cm, b = 4cm, c = 8cm
b) a = 10cm, b = 2cm, c = 15cm
c) a = 2cm, b = 4,5cm, c = 6,5cm
d) a = 6cm, b = 3cm, c = 5,5cm


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