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Verified answer
Misalpanjang = 4x
lebar = 3x
maka
Luas = p x l
Luas = 4x . 3x
Luas = 12x²
108 = 12x²
x² = 108 / 12
x² = 9
x = √9
x = 3
maka :
panjang = 4x = 4 . 3 = 12 cm
lebar = 3x = 3 . 3 = 9 cm
Verified answer
P:l=4:3L persegi panjang=p×l
108cm²=4x×3x
108cm²=12x²
x²=108cm²/12
x=√9cm²
x=3cm
p=4x
=4(3cm)
=12cm
l=3x
=3(3cm)
=9cm
jadi panjang dan lebar berturut-turut adalah 12cm dan 9cm