Jawabanmu

2014-04-24T19:50:50+07:00
L = 1/2 . d1 . d2
48 = 1/2 . 8 . (x+1)
48 = 4 (x+1)
48 = 4x + 4
4x = 44
x = 11 cm

BD = x+1 = 11 + 1 = 12 cm
1 5 1