Answer:
s= 9
Explanation:
Diego has 81 square inch tiles. He wants to use to make a square mosaic.
Area of the tile = 81 square inches
We know , area of the square = s^2
where 's' is the side of the square
Area is s²
Plug in 81 for area and solve for 's'
Take square root on both sides
s= 9
i hope this helps
have a great day :))