A classroom needs to be paved with square bricks. It needs 360 square bricks with an area of 0.16 square meters. If we use square bricks with a side length of 60 cm, how many do we need?

A classroom needs to be paved with square bricks. It needs 360 square bricks with an area of 0.16 square meters. If we use square bricks with a side length of 60 cm, how many do we need?

Classroom floor area = 0.16 * 360 = 57.6 square meters
Need to change the length of 60 cm brick = 57.6 / (0.6 * 0.6) = 160 pieces