A rectangle shaped plexiglass is 10 cm long, 8 cm wide and 6 cm high. Cut the largest cube on the plexiglass and find the rest

A rectangle shaped plexiglass is 10 cm long, 8 cm wide and 6 cm high. Cut the largest cube on the plexiglass and find the rest

Remaining area = 10 * 8 * 6-6 * 6 * 6 = 264 CC

There is a rectangular downpipe, 10 cm long and 8 cm wide. How many square centimeters of iron sheet does it need to make such a downpipe?
How many square meters of iron sheet do you need to make 10 sections?

2 m = 200 cm
The area needed to make a section
=Lateral area
=2×（10×200+8×200）
=7200 square centimeters
It's necessary to do 10 sections
=7200×10
=72000 square centimeters
=7.2 square meters

The composition of 500 words should have the description of language, action, manner and psychology

Mr. Bajin said: "parents have nothing to replace." yes, parents are irreplaceable, and their love for us is incomparable. Sometimes we may not understand our parents, but no matter what, they love us in different ways. My mother gave birth to me at the age of 23. When I came to this world, my mother went through all kinds of hardships, Selfless nurturing my healthy growth. In my heart, the most warm and tender place is not in the warm quilt, but in my mother's arms, because no matter the wind and rain, ups and downs, my mother's arms are my harbor and spiritual sustenance
In the process of children's growth, there will be some unsatisfactory things happen. As a mother, she will certainly educate her children, and even use force. This kind of thing also happens to me
I remember when I was a child, my mother would never give up because I didn't do well in the exam. Although my mother tried to hide it, I was always afraid to catch my mother's lost eyes. So I tried to hide the exam papers secretly several times when I failed to perform well in the exam, and secretly decided: "I won't be like this next time!" whenever my mother asked me where my recent exam papers were, I blushed and said, "and Not yet. '
Once my mother cleaned up the desk and inadvertently opened the drawer. My "secret" was revealed. My mother took it up and looked at it. She was surprised and asked me, "when is this paper?" "this This... " I blushed and stammered. My mother didn't hesitate to hear that. She angrily picked up the broom and beat me. Every time she beat me, she scolded me. While she beat me, she said, "it's my mother's fault. When did I learn to lie to you? Did you say that I beat you because you didn't do well in the exam? But you not only hid the papers, but also lied to my mother!" the more I cried, the more my mother cried, But my hand hasn't stopped. Suddenly, the broom broke and I didn't cry. My mother looked at the broom and looked at me with tears streaming down her face. It hurt my mother. I think I really hurt my mother this time. When I went to bed that night, I felt some pain in my wound. When I opened my eyes, my mother was applying medicine to my wound, Full of crystal tears
If you ask me if I hated my mother at that time, I can answer you in a loud voice: "no", because I understand that everything my mother did to me was for my good. My mother beat me not for abuse, but for love, This kind of love can only be found in family. I believe that mothers love their children forever
My mother is so busy at work that she is very tired, but she has no time to rest and worry about my affairs. Once, I got more than 70 points in the examination paper. My mother has been silent for a long time and announced a major decision that my mother will study with me at home for two months, Because of my decline in study, my mother even gave up her work to help me improve my grades. I was moved by my mother! In the past two months, we worked hard together to pass all the subjects, and we didn't learn 12 o'clock every night. The unit exam results were like stepping on the stage. After two months, I ran home excitedly, I got two hundred! None of my minor scores got lower than 90. After the exam, the teacher held a parents' meeting and praised me publicly. After the meeting, the head teacher asked my mother, what's the secret that can make my grades rise so fast? My mother laughed. In fact, what's the secret? It's just my heart. My mother often told me when I failed: failure is the mother of success. Pay more attention and use more brains, In fact, you are not stupid at all. On the contrary, you are very smart. You also told me to unite my classmates, help my classmates and respect my teachers. Because of my mother's instruction, I am very serious now. I have many good "friends" in school and become a student that my teachers like. Now I am growing up and gradually understand a lot of things, Understand a lot of truth. Every time I talk to my mother about who I helped. My mother is smiling and nodding. I know she is using great love to cultivate me
Love is a mother's career all her life, and mother's labor for her children is without cost. Mother's love is like the vast sea, allowing my boat to roam in the sea and contain everything I have. Although my mother is not a saint, she uses her simple and kind heart to guide me to be a strong one in my study and life, Look carefully, there are some wrinkles on my forehead. My mother broke my heart these years. She gave me too much
Mom, I love you! You are the best mom in my heart

Grade 5 Volume 2 mathematics class Page 38
Fill in the blanks
(1) A minimalist fraction whose product of numerator and denominator is 24 is () or ()
(2) For a simplest fraction, the numerator is expanded three times and the denominator is reduced two times, which is 4 and 1 / 2. The original fraction is (), and its fractional unit is ()
(3) The number of spectators who support team a to win is 5 out of 12, the number of spectators who support team B to win is 17 out of 36, and the rest are neutral
(4) In 1, there are () 1 / 17; in 3, there are () 1 / 4; in 2 and 7 / 9, there are () 1 / 9
judge
(1) Any fraction can be turned into a false fraction
(2) A fraction whose numerator and denominator are even numbers must not be the simplest fraction
(3) If the numerator and denominator are odd, it must be the simplest fraction
(4) There is no score less than 1 in 8 and 1 in 9
Fangfang and Yuanyuan compete in typing. Fangfang typing 350 in 3 minutes and Yuanyuan typing 583 in 5 minutes. Whose typing speed is fast? Why?

Fill in the blanks (1) a minimalist score, its numerator and denominator product is 24, this score is (3 / 8) or (1 / 24) (2) a minimalist score, its numerator expands 3 times, denominator reduces 2 times, is 4 and 2 / 1, the original score is (3 / 4), its score unit is (1 / 4). (3) a, B two football teams compare

2.1 (x-3) = 2.52, please!

2.1(x-3)=2.52
x-3=2.52/2.1
x-3=1.2
x=3+1.2
x=4.2

How to calculate 46 × 102 with simple algorithm

46X102=46X（100+2）
=46X100+46X2
=4600+92
=4692

I want to get the detailed steps of the third question of the last question and prove that (I have the answer: AG is perpendicular to y = KX + b)
First of all, we offer a very good reward!

This kind of problem with the minimum sum of two sides often uses the principle that the sum of two sides of a triangle is greater than the third side to turn the two sides of a triangle into a straight line. We just need to gather the clues up. The third problem of this topic means that as long as PG + 2ga or 0.5pg + GA is the minimum

At present, a commodity is reduced by 10% for promotion. In order to keep the total amount of sales unchanged, the sales volume will increase compared with the original price______ The accuracy of the results was 0.1%

Suppose the unit price of sales is a, the sales volume is B, and the sales volume is m more than the original price, then the total amount of sales is ab. according to the meaning of the question: (1-10%) a · (1 + m) B = AB, the solution is: m ≈ 0.111 = 11.1%. So the answer is: 11.1%

When m equals -- the intersection of the line y = 2x + m and the line y = 3x-4 is at the same point of the x-axis

y=2x+m ---x=(y-m)/2
y=3x-4 --- x=(y+4)/3
(0-m)/2=(0+4)/3
-m/2=4/3
m=-8/3

1 (optional) the answers to the selected exercises of geometry proof in version a
40-41 exercise 2.5 6-9

6. This is simple. First of all, use the cutting line theorem: am square = MB * MC, then replace am with MP (according to the midpoint), and get MP square = MB * MC. Then you will find that this formula is a set of similar corresponding edges proportional, that is, triangle MPB and triangle MCP, plus a common angle, angle PMC, to prove the phase likelihood