Jawabanmu

2014-02-03T21:33:47+07:00
Lpersegi panjang = (p x l)
14 2/5 = 2 1/4 x l
72/5 = 9/4 x l
l = 72/5 : 9/4
l = 72/5 x 4/9
l= 288/45
l= 32/5 = 6 2/5 m
Jadi l = 6 2/5m

1 1 1
2014-02-03T21:33:53+07:00
14 2/5 : 2 1/4
=72/5 : 9/4
=72/5x4/9
=288/45
=6 18/45
=6 2/5