Jawabanmu

2014-06-07T13:32:56+07:00
5x x 4x : 2 = 160 
10x2 = 160
x2 = 16
x = 4 cm
diagonal 1 = 20 cm
diagonal 2 = 16 cm :) 
1 5 1
2014-06-07T17:58:24+07:00
Jadi panjng kedua diagonal.a adl 20cm & 16cm
1 3 1