Use the same floor tiles to pave the floor. A room 8 meters long and 6 meters wide needs 1200 floor tiles. If you use a rectangular room 6 meters long, how many floor tiles do you need?

The area of each tile is 48 / 1200 = 0.04 square meters. The square with side length of 6 meters should use 36 / 0.04 = 900 tiles

(1) A canteen is 8.4 meters long and 4.6 meters wide. It is paved with square tiles with a side length of 0.2 meters. How many tiles do you need?
(2) It takes 2.5 hours by bus from a to B, and it takes 2.5 hours more by ship than by bus?
(3) A loom used to be able to weave 1.65 meters per minute on average. After the reform, its efficiency is 2.4 times that of the original. Now, how many meters can it weave per hour on average?

1.8.4 * 4.6 / 0.2 = 193.2, so 194 pieces are needed
Answer:
2. If the bus travels x kilometers per hour, then 2.5x = (2.5 + 2.5) * 40
The solution is x = 80
A: buses travel 80 kilometers per hour
3.1.65 * 2.4 = 3.96 (M / min) = 237.6 (M / h)
Answer

Then I want to ask: Xiaoqiao has a room that is 5 meters long and 3.9 meters wide and paved with 0.5 meters long square bricks. How many square bricks should I buy at least?

5x3.9=19.5
19.5 divided by (0.5x0.5)
=19.5 divided by 0.25
=78 yuan

Lingling's family has a room 4 meters long and 3.4 meters wide. How many pieces of square bricks are needed to pave the floor with an area of 0.25 square meters?

First, find out the area of a room: 4 × 3.4 = 13.6 (m-178;)
Then find out how many square bricks to use: 13.6 △ 0.25 = 54.4 ≈ 55 (blocks)
Combine these formulas: 4 × 3.4 △ 0.25 = 54.4 (block) ≈ 55 (block)
A: 55 square bricks are needed

The floor area of the school reading room is 247.5, covered with 0.8 meters square tiles. Is 400 yuan enough?

0.8×0.8=0.64 24705÷0.64≈387
Please accept. I wish you progress in your study

A bedroom with a length of 4.8m and a width of 3.6m needs 756 pieces of square tiles with a side length of 0.2m,
How many pieces do you need,

192 yuan

The school uses 100 square tiles with a side length of 4 decimeters to lay the floor of a conference room. How many square decimeters is the floor area of the conference room

4 × 4 × 100 = 1600 (square decimeter)
A: the floor area of the conference room is 1600 square decimeters

Use the same floor tiles to pave the floor. A room 8 meters long and 6 meters wide needs 1200 floor tiles. If you use a rectangular room 6 meters long, how many floor tiles do you need?