1. Zhao Wei's movie ticket is "No.4, row 11", abbreviated as (11,4). If Li Ming's position is (3,6), then how many rows is the distance between Zhao Wei and Li Ming? 2. Draw the largest circle in a square. What percentage of the area of the circle in the square? 3. In a square grassland with a side length of 10 meters, there is a tree at the two ends of a diagonal line. Each tree is tied with a cow. The rope length is 10 meters. How many square meters of grassland can both cows eat?

1. Zhao Wei's movie ticket is "No.4, row 11", abbreviated as (11,4). If Li Ming's position is (3,6), then how many rows is the distance between Zhao Wei and Li Ming? 2. Draw the largest circle in a square. What percentage of the area of the circle in the square? 3. In a square grassland with a side length of 10 meters, there is a tree at the two ends of a diagonal line. Each tree is tied with a cow. The rope length is 10 meters. How many square meters of grassland can both cows eat?

1.8 rows
11-3=8
2. 78.5%
If the length of a square is 10, the area is 100
The radius of circle is 5 and the area is 78.5
Then the area of the circle is 78,5% of the area of the square
3.57 square meters
Two cattle can eat 78.5 square meters respectively
100-2*（100-78.5）=57

1. Glue one end of two cylindrical wood with the same thickness and length of 40cm to form a long cylindrical wood. In this way, the surface area will be reduced by 9.42 square centimeters. What is the volume after gluing?
2. The diameter of the bottom surface of a section of cylindrical steel is 4 decimeters, and each cubic decimeter of steel weighs 7.8 kg. After two fifths of this section of steel is sawed off, how many grams does the rest weigh?
3. There is a pool, 12 meters long, 8 meters wide and 4.71 meters deep. Now a pump is used to pump water from the river. The diameter of the drainage pipe of the pump is 2 decimeters, and the water velocity in the drainage pipe is 2 meters per second. How many hours can it fill the pool?
That's all,

1. After gluing, the area of two bottom surfaces is reduced. Therefore, the area of one bottom surface is: 9.42 △ 2 = 3.14 square centimeter, the glued volume is: 3.14 × (40 + 40) = 251.2 cubic centimeter, 1 meter = 10 decimeter, the volume of cylindrical steel is: 3.14 × (4 / 2) × (4 / 2) × 10 = 125.6 cubic decimeter

There is a pile of coal in a canteen. After burning for 15 days, three fourths of this pile of coal has been burned. At this time, there are still 3 tons of coal left. How many tons of coal do you burn every day?

According to the meaning of the title, the remaining 3 tons of coal account for 1 / 4 of the pile of coal
So the total amount of coal: 3 / (1 / 4) = 12 (tons)
So the amount of coal burned in 15 days: 12 * (3 / 4) = 9 (tons)
Average daily quantity of coal burning: 9 / 15 = 0.6 (ton)
A: an average of 0.6 tons per day

100 points@
1. Draw a rectangle 4cm long and 2cm wide, draw the largest circle in the rectangle, and shadow the outer and inner parts of the circle to find the area of the shadow
2. Wang village produces 270 tons of cotton this year, 60 tons more than last year. How much more than last year?
3. 20% longer than 30 meters is () meters, 10% less than 50 grams is () grams
choice.
1. The radius of small circle is 5cm, the radius of large circle is 6cm, and the area of small circle is ()
2. For two circles of different sizes, the radius of each circle increases by 2cm, so the perimeter increases much more ()
3. A piece of iron wire is 18.84 meters long, and it just makes five circles on a round bucket. The diameter of the bucket is about ()
4. A 10% reduction in price means (a) 90% of the original price and (b) 10% of the original price
5. The goods are sold at a 70% discount, which means that the current price is A7 times of the original price, B70% C7%
6. A bag of flour is 32 kg. What's the percentage of the remaining 18 kg? It's A32 / 18 B32 / (32 + 18)

1.4.86cm2
2.29/100
3.36 45
4.25/36
5. The same amount
6．2．4
7．a
8．b
9．b