Jawabanmu

2014-05-19T21:59:24+07:00
24 = 6  x d2
           2
d2 = 8 cm
1 5 1
2014-05-19T21:59:52+07:00
Luas = 1/2 x diagonal 1 x diagonal 2
diagonal 2 = luas / diagonal 1 x 2 = 8 cm