Question
Sally had a piece of wire 21 m long. She cut 5 pieces each measuring 15 m long from the original piece. The remainder was used to form a square. Find the area of the square.
3 m

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Sally had a piece of wire 21 m long. She cut 5 pieces each measuring 15 m long from the original piece. The remainder was used to form a square. Find the area of the square.