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masukin ke rumus keliling.
k = 2(p+l)
100 = 2 (3x + 2x)
50 = 5x
x = 10
jd, p = 3x = 3.10 = 30
l = 2x =2.10 = 20
K = 100 cm
Perbandingan p dan l = 3 : 2
Dijawab :
Misal,
p = 3n
l = 2n
Maka,
K = 2(p +l)
100 = 2(3n +2n)
100 = 2(5n)
100 = 10n
n = 100/10
n = 10 cm
Sehingga,
p = 3n
= 3(10)
= 30 cm
l = 2n
= 2(10)
= 20 cm
Itu jawabannya