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= 150 : 10 = 15 cm
keliling persegi panjang = 2 x (p + l)
= 2 x (15 + 10)
= 2 x 25
= 50 cm
keliling persegi = 50 x 2 = 100 cm
sisi persegi = 100 : 4 = 25 cm
luas persegi = s x s
= 25 x 25
= 625 cm²
L = p x l
150 = p x 10
p = 150/10 = 15
K = 2 x (p+l) = 2 x (15 + 10) = 2 x 25 = 50
Persegi
K = K.persegi panjang x 2 (karena di soal K.Persegi = 2K. Persegi Panjang)
K = 50 x 2 = 100
s = K / 4 = 100 / 4 = 25
L = s x s = 25 x 25 = 625
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