b'\n_START_ARTICLE_\nKvadratna girobikupola\n_START_SECTION_\nProstornina in povr\xc5\xa1ina\n_START_PARAGRAPH_\nNaslednja izraza za prostornino (V) in povr\xc5\xa1ino (P) sta uporabna, \xc4\x8de so vse stranske ploskve pravilne in imajo dol\xc5\xbeino roba a _NEWLINE_V=\\frac{5}{12}(11+5\\sqrt{5})a^3\\approx9,24181...a^3_NEWLINE_P=(5+\\frac{1}{4}\\sqrt{1900+490\\sqrt{5}+210\\sqrt{75+30\\sqrt{5}}})a^2\\approx23,5385...a^2'