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V = 2ab + 2bH + aH
tutaj
a = 4cm
b = 6,5cm
H = 8cm
zatem
P = 2 * 4cm * 6,5cm + 2 * 6,5cm * 8cm + 2 * 4cm * 8cm =
= 8cm * 6,5cm + 13cm * 8cm + 8cm * 8cm =
= 52cm² + 104cm² + 64cm² = 156cm² + 64cm² = 220cm²
Pole tego prostopadloscianu wynosi 220 cm².