Jawabanmu

2014-05-19T13:13:38+07:00
L= d1 kali d2/2 = 10 kali 12/2 =60 cm2
2014-05-19T13:14:29+07:00
Luas layang layang = diagonal 1 x diagonal 2 / 2 = 10 x 12/2 = 10 x 6 = 60 cm2