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s = 8 m
Maka,
a) L = s²
L = 8²
L = 64 m²
b) K = 4 x s
K = 4 x 8
K = 32 m
c) d² = s² + s²
d² = 8² + 8²
d² = 64 + 64
d² = 128
d = 8√2 m
= 8 x 8
= 64 m²
b. keliling = 4 x s
= 4 x 8
= 32 m
c. panjang diagonal = 8 m ( karena persegi, jadi panjang diagonal sama dengan sisi)