A square room has a tiled floor with 81 square tiles. How many tiles are along an edge of the room?

36 tiles

Step-by-step explanation:

Because the room is square, the numbers of tiles along the edge of the room were multiplied by the same number, meaning that:

81 = x²

So to find x, we must square root both sides of the equation:

x = 9

So the length of one side is 9 tiles. Now to calculate the circumference, as each side of a square is the same length, we can multiply this number by 4:

9 * 4 = 36

So there are 36 tiles along the edge of the room.

Hope this helps!

900 degrees

step-by-step explanation:

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step-by-step explanation:

i used the pitagoras theoreme