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Pc - pole całkowite
j - jednostka (np. cm)
V = 1/3Pp×H
Pp = a² = 64
a = √64 = 8
Pc = 4Pb+Pp
384 = 4Pb+64
Pb = 80
Pb = 1/2×8×h = 80
h = 20
H²+4² = 20²
H² = 400-16
H = 8√6
V = 1/3×64×8√6 = 512√6/3 (j³)