Jawabanmu

2014-04-29T05:25:51+07:00
Diagonal bidang = n/2 (n-3) = 5/2 (5-3) = 5/2 . 2 = 5
diagonal ruang = n (n-3) = 5 (5-3) = 5 . 2 = 10
bidang diagonal = (n (n-3))/2 (5(5-3))/2 = 5