Jawabanmu

2014-09-03T21:48:29+07:00
2014-09-03T22:08:36+07:00
P=(20, 3-(3, 75+3, 75)):2
=(20, 3-7, 5):2
=12, 8:2
=6, 4
L=6, 4x3, 75
=24