Jawabanmu

2014-05-28T19:47:53+07:00
Kll = 2p + 2l
46 = 2x14 + 2l
46 = 28 + 2l
46-28 = 2l
18 = 2l
18 = l
 2
9 = l

jadi lebar persegi panjang tsb adalah 9 cm
keliling = 2panjang + 2lebar
46 = (2 x 14) + 2lebar
46 = 28 + 2 lebar
46-28 = 2 lebar
18 = 2 lebar
18 : 2 = lebar
9 = lebar
2014-05-28T19:55:25+07:00
Keliling = 2 x panjang + 2 x lebar Keliling = 46 cm Jika p = 14 cm Maka K = 2p + 2l 46 = (2 x 14) + 2 x lebar 46 = 28 + 2l 2l = 46 - 28 2l = 18 Lebar = 18 ÷ 2 Lebar = 9