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Bab Bangun DatarMatematika SD Kelas V
1] persegi
Luas = 256
s² = 256
s = √256
s = 16
Keliling = 4 x s
Keliling = 4 x 16
Keliling = 64 cm
2] Persegi
luas = 289
s² = 289
s = √289
s = 17 m
Ditanya : keliling
Jawab:
S =✓L
= ✓ 256 cm²
= 16 cm
Kelilingnya = 4 x s
= 4 x 16 cm
= 64 cm
Jadi, keliling persegi adalah 64 cm
2. Diketahui: L = 256 cm²
Ditanya : panjang pagar
Jawab:
= ✓289 cm²
= 17 m
Kelilingnya = 4 x s
= 4 x 17
= 68 m
Jadi, panjang pagar adalah 68 meter