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Pp = 1/2 * x * 2,5x = x²
V = Pp * h
V = 40 cm3
V = x² * 5x
5x³ = 40 cm
x³ = 8
x=∛8
x=2 cm
przekatne: 2 cm i 5cm
a²=1²+2,5²
a²=1+5
a²=6
a=√6 cm