Jawabanmu

2014-02-13T20:51:36+07:00
Lebar = x, panjang = (2x-3) 
K = 36
2(p+l) = 36
2(2x-3+x) = 36
2(3x-3) = 36
6x - 6 = 36
6x = 42
x = 7 cm