To pave a room with floor tiles, if you use 60 cm square bricks, you need 350 pieces. If you use 1 m square bricks, how many pieces do you need?

To pave a room with floor tiles, if you use 60 cm square bricks, you need 350 pieces. If you use 1 m square bricks, how many pieces do you need?

If a square brick with a side length of 1 meter is used, X pieces are required, 60 cm = 0.6 m; according to a certain area of the room floor, the area of each square brick is inversely proportional to the number of square bricks, the area of a square brick with a side length of 0.6 m is (0.6 × 0.6) m2, and the area of a square brick with a side length of 1 m is (1 × 1) m2
(0.6×0.6)：(1×1)=x：350
Solution ratio:
x=350×0.6×0.6
x=126
Answer: if use the square brick of side length 1 meter, need 126 pieces