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Keliling : 4 x Sisi
contoh : Sisi = 5 cm2
Keliling = 4 x 5
= 20 cm
Luas : Sisi x Sisi
Contoh Soal: Diketahui sisi = 5 cm
Maka luas = 5 x 5
= 25 cm2
KELILING = 4 × S
LUAS = S × S
Cotoh :
1). Hitunglah keliling jika diketahui S = 4 cm!
Jawab :
K = 4 × S
K = 4 × 4 cm
K = 16 cm
2) Hitunglah Luas jika diketahui S = 6 cm!
Jawab :
L = S × S
L = 6 cm × 6 cm
L = 36 cm²