Helen is using glass tiles that each measure one square centimeter to make a decorative square plate. The plate will use 144 square centimeters of glass tiles.

Answer 1

Since each glass tile measures one square centimeter, if Helen wants to make a plate that is 144 square centimeters, she will need 144 glass tiles.

To make a square plate, Helen will need to arrange the 144 glass tiles in the shape of a square. To find the length of each side of the square, she can take the square root of 144:

√144 = 12

Therefore, Helen will need to arrange the 144 glass tiles in a 12x12 square to make the decorative plate.