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Verified answer
Jarak Garis A ke EC adalah Garis AIPerhatikan Segitiga siku² ECA
Dengan sedikit manipulasi akan diperoleh
½ • EC • AI = ½ • AC • EA
AI = (AC • EA) / EC
Sekarang kita cari dlu AC dan EC
> AC = Diagonal bidang , shg
AC = sisi√2
AC = 12√2 cm
> EC = Diagonal ruang , shg
EC = sisi√3
EC = 12√3 cm
Sehingga kita subtitusi ke pers. awal didapat
AI = (12√2 • 12) / 12√3
AI = 12√2 / √3
AI = (12√2 / √3) x (√3 / √3)
AI = 12√6 / 3
AI = 4√6 cm