Jawabanmu

2014-03-31T20:17:49+07:00
Keliling persegi panjang= 2(p+l)
76= 2(23+l)
38= 23 + l
15 cm = l
1 5 1
2014-03-31T20:22:07+07:00
Kll = 2 (p+l)
76 = 2 (23 + l )
76 / 2 = 23 + l
38 = 23 + l
l = 38 - 23
l = 15