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= 9 x 7
= 63
jika kliling persegi 2 kali keliling persegi panjang maka
luas persegi x 2 = 63 x 2 = 126
2 ( P + L ) = Keliling Persegi panjang
2 ( 9 + 7 ) = 2 ( 16)
= 32cm
jadi keliling Persegi = 32 x 2 = 64
Persegi :
4Sisi = keliling
4S = 64
S = 64/4
S = 16
S x S = luas Persegi
16 x 16 = 256 cm²
jadi luas persegi 156cm²