Jawabanmu

Jawaban paling cerdas!
2014-02-02T16:01:08+07:00
Panjang = y , lebar = y-5 . kel = 2p+2l . 40= 2(y)+2(y-5) . 40=4y-10 . y=12,5
2 5 2
2014-02-02T16:03:18+07:00