Sara is lining a square tray with 1inch tiles. The side length of the tray is 9inches. How many tiles does Sara need?
9 * 9 = 81 tiles
To determine the number of tiles Sara needs to line the square tray, we can calculate the total number of tiles that will fit in the tray.
First, find the area of the tray:
The side length of the square tray is 9 inches, so its area is 9 inches × 9 inches = 81 square inches.
Since each tile has a width and height of 1 inch, each tile covers 1 inch × 1 inch = 1 square inch.
To find the number of tiles needed, divide the area of the tray by the area of each tile:
81 square inches ÷ 1 square inch = 81 tiles.
Therefore, Sara needs 81 tiles to line the square tray.