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h² (wys. ściany bocznej) = 12² - 5² = 144 - 25 = 119
h = √119
Pb = 4 * 10√119/2 = 20√119
Pc = 20√119 + 100
b) Pp = 6 * √3/4 * 14² = 294√3
h² = 25² - 7² = 625 - 49 = 576
h = √576 = 24
Pb = 6 * 14 * 24/2 = 6 * 168 = 1008
Pc = 1008 + 294√3