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ana1093
The square root of 256 is 16 and since its a square all sides are equal so the length of the room is 16 ft...

Area of Square Living room=256 feet²

Area of Square=(Side)²

⇒(Side)²=256 feet²

→(Side)²=(16 feet)²

→Side=16 feet

That is, Length of Room=16 feet