b'\n_START_ARTICLE_\nPodalj\xc5\xa1ana petstrana girobikupola\n_START_SECTION_\nProstornina in povr\xc5\xa1ina\n_START_PARAGRAPH_\nNaslednja izraza za prostornino (V) in povr\xc5\xa1ino (P) sta uporabna za vse stranske ploskve, ki so pravilne in imajo dol\xc5\xbeino roba 1 _NEWLINE_V=\\frac{1}{6}(10+8\\sqrt{5}+15\\sqrt{5+2\\sqrt{5}})a^3\\approx12,3423...a^3_NEWLINE_A=(20+\\sqrt{\\frac{5}{2}(10+\\sqrt{5}+\\sqrt{75+30\\sqrt{5}})})a^2\\approx27,7711...a^2'