Xiaodong's bedroom is 4.5 meters long and 2.5 meters wide. Use 0.5 meter square tiles to pave the floor. Are 50 such tiles enough?

4.5 × 2.5 △ (0.5 × 0.5), = 11.25 △ 0.25, = 45 (pieces); 45 < 50; a: prepare 50 such tiles

Wang Hong's house is decorated with square floor tiles with a side length of 0.8 meters. It is known that Wang Hong's living room is a rectangle with a length of 9.6 meters and a width of 5.7 meters. Is 100 tiles enough for the living room

In practical operation, you need to calculate the length and width of each brick. 9.6 divided by 0.8 needs 12 bricks, 5.7 divided by 0.8 needs 8 bricks, so you need 96 bricks in theory, but not so much in practice, because the brick on the edge of the wide side is only 0.1M, if you cut it well, you can divide one brick into eight, In this case, you only need 86 bricks. 4.4 * 2.5 can be regarded as 4 * 2.5 + 0.4 * 2.5 = 10 + 1 & nbsp; & nbsp; & nbsp; & nbsp; 2.5 * 32 * 1.25 can be regarded as (2.5 * 4) * (8 * 1.25) = 10 * 10. I can't think of the previous one, sorry

Xiaoming's house needs to lay the floor. The side length of a square tile is three decimeters. 200 is just the time to finish Xiaoming's bedroom. How many square meters is the area of this bedroom

3 decimeters = 30 centimeters = 0.3 meters, a square brick area = 0.3 * 0.3 = 0.09 square meters, 200 * 0,09 = 18 square meters, so the bedroom area is 18 square meters

A classroom is 9 meters long and 6 meters wide. Now we paste square tiles on the classroom. The side length of the tiles is 6 meters. How many tiles do we need to lay this classroom?

150

If the side length of a square is increased by x cm and its perimeter is increased by 12 cm, then the equation can be formulated?

4x=12
x=3

The perimeter of a square is 12 cm. Find the side length and area and use the equation to solve it

Set the side length x cm
4x=12
x=3
Area: 3 × 3 = 9 square centimeters

A square with a circumference of 36 decimeters has the same area as a parallelogram with a bottom of 12 decimeters. What is the height of the parallelogram?

The side length of the square is: 36 △ 4 = 9 (decimeter)
The height of parallelogram is:
9x9 △ 12 = 6.75 (decimeter)

The perimeter of the square in the figure is 36dm. Can you work out the area of the parallelogram?

The perimeter of the square is 36dm, so the perimeter of the square is: 36 △ 4 = 9 (decimeter), and the area is: 9 × 9 = 81 (square decimeter). Because the square and the parallelogram have the same base and height, the area of the square is equal to the area of the parallelogram, that is, the area of the parallelogram is 81 square decimeter. A: the area of the parallelogram is 81 square decimeter

The perimeter of the square is 32cm. Can you find the area of the parallelogram?

32 △ 4 = 8 (CM), area: 8 × 8 = 64 (cm 2). Answer: the area of parallelogram is 64 cm 2

Why does a parallelogram square with a certain perimeter have the largest area

Because when the sum of two numbers is fixed, the smaller the difference between two numbers is, the larger the product is. The perimeter must be able to infer that the sum of two adjacent sides is fixed. In this case, the difference between two adjacent sides of a square is 0, so the product is the largest, that is, the area is the largest

Xiaodong's bedroom is 4.5 meters long and 2.5 meters wide. Use 0.5 meter square tiles to pave the floor. Are 50 such tiles enough?