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Un patrat are lungimea diagonalei 8 cm. Calculati perimetrul patratului.

Răspuns :

Daca diagonala=8 cm =>t. Pit. 2L²=64=>L²=32=>L=4√2 cm
P=4x4√2=16√2 cm
2L²=64=> L²=32=> =>L=4√2 => P=4x4√2=>16√2cm