Jawab:
Penjelasan dengan langkah-langkah:
kelililng = 2(p+l)
160 = 2p+2l
160 = 2 (40) + 2l
160 = 80 + 2l
160-80 = 2l
80 = 2l
l = 80 :2
l =40
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Jawab:
Penjelasan dengan langkah-langkah:
kelililng = 2(p+l)
160 = 2p+2l
160 = 2 (40) + 2l
160 = 80 + 2l
160-80 = 2l
80 = 2l
l = 80 :2
l =40
jadi =2×40×l
=80×l
l =160-80
l =80
jadi lebar tersebut =80:2
=40
karena:
keliling =2(p+l)
=2×40+40
=2×80
=160
jadi dapat disimpulkan bahwa lebar tersebut adalah 40 cm