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Use the above three words to describe the situation when a person is running fast
Speed, speed, two ears of wind, stepping on the wheel of wind and fire
We should learn Chinese well and English well
We should learn both Chinese and English well
We need to learn to use our brain. We need to learn to use our hands. We need to combine two sentences into one with relevant words
We should learn to use our brains as well as our hands
We should not only learn to use our brain, but also learn to use our hands
The area of a square is 3 square centimeters, a vertex of a square is the center of the circle, and the side length is the radius. Draw a circle and find the
Area of the circle? If so, then
Side length of square = √ 3
Area of circle = 3.14 * (√ 3) ^ 2 = 9.42 square centimeter
If the perimeter of a square and a circle is equal to 1 meter, what is the ratio of their areas
mathematical problem
Square area: 1 / 4 * 1 / 4 = 1 / 16
Area of circle: 3.14 * (1 / 3.14 / 2) ^ 2 = 1 / (3.14 * 4)
Area ratio of a square to a circle: 3.14:4
How to find the area formula of inscribed square
Divide the area of the circle by 3.14 times 2
How to find the area of a semicircle in a rectangle or square. It's best to give a formula
The area of a circle is π R ^ 2
Which side of a rectangle is the radius, R
The side length of a square is r
The semicircle is 1 / 2 π R ^ 2
Draw the largest square in a circle. The area of the square is AC m2. How much is the area of the circle
Let x cm be the side length of a square
Then, X & # 178; = a, that is, x = √ a
In this case, the diagonal l of the square is the diameter of the circle D, X & # 178; + X & # 178; = L & # 178;, and the solution is d = L = a √ 2 cm
The radius of the circle is r = D / 2 = (a √ 2) / 2 cm
The area of the circle is: S = π R & # 178; = π * A & # 178; / 2 cm & # 178;
Area formula of triangle, square, parallelogram, diamond and circle
Triangle: bottom * height / 2
Square: side length * side length
Parallelogram: base * height
Diamond: 1, with the "parallelogram" 2, diagonal multiplication and division by two
Circle: the square of radius multiplied by π
The outer circle radius of a ring iron sheet is 2.5cm, the ring skin width is 0.5cm, and the area of the iron sheet is () square decimeter
Inner radius = 2.5-0.5 = 2 cm
Area = 2.5 × 2.5 × 3.14-2 × 2 × 3.14 = 7.065 square centimeter = 0.07065 square decimeter
RELATED INFORMATIONS
- 1. When the teacher tells us the answer, let's think about it first and fill in the relevant words
- 2. What are the poems about winter
- 3. What are the words of what and what type? Don't answer indiscriminately. Need something for daily use. The more the better
- 4. Go - () () call - () () write four words with similar meaning in front and words with similar meaning in the back Line up; look at - (look) (look) (glance) (glance) (gaze) To remove the word "song" from the meaning of a song
- 5. Spring and autumn () Sangzi () Buyi () Your father () peach and plum () wild goose ()
- 6. Choose five of the following words and write a coherent passage Generous, Zhang Huang, struggling, calm, mang ran, as always, exhortation, doubt, angry eyes,
- 7. Read the following words, choose 3 to 5, and write a few coherent sentences Miracle of the century comfort creates mystery fantasy calls wind and rain
- 8. A beautiful sentence about strawberry. 150 words
- 9. Use four word words to describe a lion
- 10. Four word words to describe mood They share the same bad taste. They are desolate and uninhibited. They feel sad as if nothing happened Loafing and fleeing, fish in, not caring, ecstatic To describe mood: Expressing the action of a character: Expressing the characteristics of a character: With the color of criticism:
- 11. Words or sentences describing running
- 12. Recombine the following letters into words redss otac soopn
- 13. What are the rules of combining English letters into English words?
- 14. Rearrange the following letters to form words 1.t,y,o,r,u,c,n:______________ 2.n,o,a,t,o,c,r:______________ 3.r,o,r,t,a,c,n:______________ Please answer the second Wait!
- 15. Not too many words
- 16. There are many rectangles of 4cm in length and 3cm in width in the children's Park. If they are used to make a big square, how many centimeters is the minimum side length of the big square? How many centimeters do you need How many such small squares?
- 17. As shown in Figure 1, a rectangle (M > n) with length m and width n is cut along the dotted line and spliced into Figure 2 to form a large square after removing a small square from a corner. Then the side length of the removed small square (expressed by the formula containing m, n) is______ ．
- 18. Five small squares with a side length of 1 make a big square
- 19. There is a piece of paper with a length of 6.5cm and a width of 2cm, as shown in the figure. Please divide it into 6 pieces, and then put it together into a square. (requirement: draw the dividing line in the figure, and then draw the square and mark the corresponding data)
- 20. What is the circumference of a square with a side length of 6 cm______ If the perimeter of another rectangle with a length of 8 cm is equal to the perimeter of this square, then the width of the rectangle is______ Cm