Area is measured in square units. On a centimetre grid each square measures 1 cm by 1 cm. Each square has an area of one square centimetre, 1 cm². The area of the square is the side-length ...

One of the pictures shows the total of different shapes. The other image has a question ... Column 1 is 2(8) + 9 + square = 28, so the square must be 3,” posted a Reddit user.