Jawab:
Keliling = 80 cm
Lebar = Panjang - 12 cm
(Lebar = L, Panjang = P)
Keliling = 2 x (panjang + lebar)
80 = 2 x (P + P -12)
80/2 = 2P - 12
40 = 2P - 12
40 + 12 = 2P
52 = 2P
52/2 = P
26 = P
L = P - 12
L = 26 - 12
L = 14
Jadi, panjang = 26 cm dan lebar = 14 cm
Jawaban : A
Penjelasan dengan langkah-langkah:
Jawaban:
A 26 cm dan 14 cm
p = 26 cm
l = 14 cm
K = 80 cm
K persegi = 2(p+l)
l = p-12
p=l+12
K=2(p+l)
80 = 2(l+12+l)
80 = 2(2l+12)
80 = 4l+24
4l = 56
l = 56/4
p = l+12
p = 14 + 12
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Jawab:
Keliling = 80 cm
Lebar = Panjang - 12 cm
(Lebar = L, Panjang = P)
Keliling = 2 x (panjang + lebar)
80 = 2 x (P + P -12)
80/2 = 2P - 12
40 = 2P - 12
40 + 12 = 2P
52 = 2P
52/2 = P
26 = P
L = P - 12
L = 26 - 12
L = 14
Jadi, panjang = 26 cm dan lebar = 14 cm
Jawaban : A
Penjelasan dengan langkah-langkah:
Jawaban:
A 26 cm dan 14 cm
p = 26 cm
l = 14 cm
Penjelasan dengan langkah-langkah:
K = 80 cm
K persegi = 2(p+l)
l = p-12
p=l+12
K=2(p+l)
80 = 2(l+12+l)
80 = 2(2l+12)
80 = 4l+24
4l = 56
l = 56/4
l = 14 cm
p = l+12
p = 14 + 12
p = 26 cm