Suatu persegi panjang memiliki panjang 6 cm lebih dari lebarnya. jika kelilingnya 68 cm, tentukan: a. panjang dan lebarnya, b. luasnya #Tolong dijawab ya(^v^)
annisanursaydi
Panjang = 20 cm lebar = 14 cm luas = 20 x 14 = 280 cm persegi
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newbie
P = 6 + l K = 2(p + l) 68/2 = p + l 34 = (6 + l) + l 34 = 6 + 2l 2l = 34 - 6 l = 28/2 = 14 cm p = 6 + l = 6 + 14 = 20 cm L = p x l = 20 x 14 = 280 cm²
lebar = 14 cm
luas = 20 x 14 = 280 cm persegi
K = 2(p + l)
68/2 = p + l
34 = (6 + l) + l
34 = 6 + 2l
2l = 34 - 6
l = 28/2 = 14 cm
p = 6 + l = 6 + 14 = 20 cm
L = p x l = 20 x 14 = 280 cm²