b'\n_START_ARTICLE_\nPodalj\xc5\xa1ana petstrana girobirotunda\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}(45+17\\sqrt{5}+15\\sqrt{5+2\\sqrt{5}})a^3 \\approx 21,5297...a^3_NEWLINE_P=10+\\sqrt{30(10+3\\sqrt{5}+\\sqrt{75+30\\sqrt{5}}})a^2 \\approx 39,306...a^2.'