In a 30 meters long, 10 meters wide, 2.2 meters deep cuboid cistern tiles, tiles are. 02 meters long cube, how many tiles? By the way, let you answer this question again. How many cubic meters can this reservoir store at most?

（30×10+30×2.2×2+10×2.2×2）÷0.2^2
=476÷0.04
=11900 (pieces)
Volume: 30 × 10 × 2.2 = 660m & # 179;

Tile the bottom and sides of a cuboid cistern 20 meters long, 8 meters wide and 1.6 meters deep. The store has a cube with a side length of 2 decimeters
Tile, 6 yuan per piece. 1. How many square meters of tile area is needed? 2. What questions can be raised?

1. How many square meters of tile area is needed? The answer is: bottom area 20 times 8 plus surrounding area 8 times 1.6 times 2 plus 20 times 1.6 times 2 equals 249.6 square meters
2. What else can I ask?
How much is the total cost of tiling around and at the bottom of the cuboid reservoir?
The answer is: divide the tile area by the tile area and multiply the price of each tile, that is, 249.6 divided by 0.2 times 0.2 and multiplied by 6 equals 37440 yuan

In a cuboid (uncovered) cistern, which is 40 meters long, 1.6 meters deep and 8 meters wide, tiles are pasted around and on the bottom of the cistern, which is a cube with a side length of 0.2 meters
How many tiles are needed?

Hello
Tile area = 40 × 8 + (40 × 1.6 + 8 × 1.6) × 2 = 473.6 (M2)
Total number of tiles required = 473.6 ÷ (0.2 × 0.2) = 11840 (tiles)

In a 20 meters long, 8 meters wide, 1.5 meters deep cuboid reservoir, tiles are 0.2 meters long square, how many tiles do you need?

What is the area to be tiled
20 × 8 + (20 × 1.5 + 8 × 1.5) × 2 = 244 (M2)
Need tiles
244 (0.2 × 0.2) = 6100 (block)

In a 20 meters long, 8 meters wide, 1.5 meters deep cuboid reservoir, tile, tile side length of 0.2 meters square
How many tiles are needed to fill the pool?

That is, the inner surface area of the cuboid reservoir is required to be 2 (20 * 8 + 8 * 1.5 + 20 * 1.5) = 404 square meters
If the side length of the ceramic tile is 0.2m square, the area of a ceramic tile is 0.2 * 0.2 = 0.04m2
So a total of 404 / 0.04 = 10100 tiles are needed to fill the pool

Li Jiazhuang has built a circular reservoir with a circumference of 251.2. How many square meters does it cover

What is the radius of the reservoir
251.2 ﹣ 3.14 ﹣ 2 = 40 (m)
What is the floor area
40 × 40 × 3.14 = 5024 (M2)

A circular ornamental fish pond, the perimeter is 251.2 meters, the fish pond area is how many square meters?

Radius: 251.2 △ 3.14 △ 2 = 40 (meters), area: 3.14 × 402, = 3.14 × 1600, = 5024 (square meters). Answer: the fish pond covers an area of 5024 square meters

A circular ornamental fish pond, the perimeter is 251.2 meters, the fish pond area is how many square meters?

Radius: 251.2 △ 3.14 △ 2 = 40 (meters), area: 3.14 × 402, = 3.14 × 1600, = 5024 (square meters). Answer: the fish pond covers an area of 5024 square meters

The perimeter of a circular reservoir is 25.12m. What is the floor area of the reservoir
To write a formula

Radius: 25.12 ﹣ 3.14 ﹣ 2 = 4m
Area: 3.14 × 4 × 4 = 50.24 square meters

There is a circular fountain in the park, with a circumference of 31.4 meters. What is the area of the fountain?

31.4 ﹣ 3.14 ﹣ 2 = 5 (m), 3.14 × 52 = 78.5 (M2); answer: the area of this fountain is 78.5 m2

In a 30 meters long, 10 meters wide, 2.2 meters deep cuboid cistern tiles, tiles are. 02 meters long cube, how many tiles? By the way, let you answer this question again. How many cubic meters can this reservoir store at most?