It s a very simple T, how to do it, T T

The area reduced is to sawed off the 4 surface areas of the box (no cross-section) because its cross-section is square, so one of the 4 faces is already equal, and the other side is also equal (that is, the edges of this box, which you don't need to think about and know, it is known) so these 4 surface areas are equal! You say"The surface area is reduced by 480 square centimeters, and one face is 480 4 equals 120 square centimeters! According to the area formula, it is equal to the length multiplied by the width, the length is 20 centimeters, now find the width, use 120 20 equals 6 centimeters!

That's the side length of this box cross-section! Because the cross-section is square, the area of the cross-section is 6 times 6 equals 36 square centimeters!

1 meter is equal to 100 centimeters, according to the volume formula v = base area multiplied by the height of the generation, that is, 36 times 100 equals 3600 square centimeters! A: ...

The main idea of this question is to first find the cross-section of the box that it was sawed off, which is actually the cross-section of the original box, and then multiply it by the length of the original box, which is the volume!

When sawing off 20 cm long, the surface area is reduced by 480 square centimeters, which should be reduced by the side area: bottom circumference = side area height = 480 20 = 24

Side side length = side circumference Number of sides = 24 4 = 6

Volume = base area * height = 6 * 6 * 100 = 3600 cubic centimeters.

Doing T is a spread arbitrage operation method in **, because the trading system of A shares is T+1, T refers to English Trade (trading, trading), and T+1 means that you buy ** today to sell on the next trading potato seepage day. But if you already have a **position** before, then you can sell the previous ** again ** on the same day, so as to achieve a day of trading, that is, T+0 operation.

Generally, after ******, the operation method of doing T is often used, the purpose is to recover losses, maximize their profits, and after continuous T doing, to reduce losses, and even finally turn losses into profits.

For example: for example, if you have 1,000 shares in your hand and the cost is 10 yuan, and the stock price goes to the yuan when you open low on the same day, then you buy 1,000 shares, and when the stock reaches the yuan, you can sell 1,000 shares (because you had 1,000 shares in your hand before), and after buying and selling, you theoretically earned a difference of 1,000 yuan on the same day.

The 12 ways to do t are bounded by a white line.

The time-sharing is composed of a white instant transaction line and a yellow average transaction line, and the general white line does not fall below the yellow line, and has been running above the yellow line, indicating that the buying order is positive, and it is the active and strong realization of the ** disk on the same day. The volume below is the immediate volume, and the MACD is the instant cancellation MACD.

The white line is real-time**, which is what we often call time-sharing; The yellow line is the current day**. If the white line falls below the yellow line and keeps running below the yellow line, it means that the selling order is positive, which is a sign of weakness on the day. In this case, I will not participate in the work in principle.

There are two types of doing t: positive t and inverse t. Positive T: Find a buy point from the time. It is divided into the following 6 situations: the first type: when the time-sharing crosses **, it begins to increase the volume significantly, and it can be followed up.

The second type: after the finishing, there is a sudden sharp increase in the action, and the time-sharing straight line rises, which belongs to the embodiment of the main force to do long, ** signal.

The third type: three downward temptations at the same time do not break, and wait for the volume upwards, and you can follow up and participate.

Fourth: the bottom of the 3 time-sharing rises step by step, and there is a amount of energy to cooperate, and you can also follow up and participate.

Fifth: After the time-sharing rapid dive, quickly hook the head and wear it in large quantities to form a golden fork and laugh, it is recommended to participate.

Sixth: time-sharing domain** The fluctuation is flat and divergent upward, the trend is bullish, and you can participate in separate positions.

Anti-t: It is convenient for us to find selling points. Here are also 6 scenarios:

The first type: the stock price has been running above the average price line, and it is safe to hold the stock if it does not break, but once it falls below, then it is the selling point.

The second type: ** open low and rush up, at this time you have to pay attention to the amount of energy, have you found that when the stock price turns red and rises and rises, the amount of energy has been shrinking, at this time you buy it, it is a time-sharing high. To select Sell.

The third type: when the ** online pull up, it is found that the time-sharing volume is not intensively amplified, and the amount of energy is uneven, indicating that the main force is not resolute enough to do long, and it should be sold.

Fourth: rapid rise, the amount of energy has not continued to amplify, and the average price line has not kept up, and the moment of turning around is the selling point.

Fifth: If there is a profit first out along the box, the middle line is a low-suction opportunity such as breaking the position and throwing.

Sixth: open long wave**,**Wuliang should be sold immediately. The main force is resolute in smashing the market and shorting.

The right way:

1. Suppose you want to buy a **500 shares. The first purchase is 100 shares. Then, if the market is **, buy the second 100 shares, and so on.

Each subsequent purchase is bound to be at a higher price than the previous one. If you follow this rule, you can get closer to the right side of the market than any other method.

The reason for this is that, according to such a procedure, all transactions are profitable from start to finish. The fact that your position did make a paper profit is strong evidence that you are right.

2. Don't make excuses when you make mistakes, admit your mistakes frankly, and learn from them as much as possible.

3. Whether you can succeed in trading depends on your courage and decisiveness to act when the ** pattern signals you to act. <>

Proof that: (1) the point o is respectively oe ab, of ac, e, f are respectively perpendicular foot, from the meaning of the question, oe=of, ob=oc, rt oeb rt ofc, b= c, thus ab=ac;

2) The point o is made as oe ab, of ac, e, f are respectively perpendicular feet, known by the meaning of the title, oe=of

In RT OEB and RT OFC, OE=OF, OB=OC, rt OEB rt OFC, OBE= OCF, which is known by OB=OC obc= OCB, ABC= ACD, AB=AC;

Solution: As ae bc, the circumference of the diamond is 12cm, then ab=3cm, the ratio of the two corners of the adjacent Ming line is 5:1, and the sum of the two corners is 180°, disturbing the eggplant.

b = 30°, in RT ABE, ab = 3 cm, b = 30°

ae=, so choose b

1 (1 10 + 1 15) = 6 times.

Large and small trucks are transported at the same time, and large and small trucks can be transported in six trips each.