Words or sentences describing running

Words or sentences describing running


The arrow is ready to go
Just after running, tired of my face flushed, panting, sweating, legs messy, as if about to lie down!



A word for running fast?


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Words praising running
Urgent, urgent, urgent,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, urgent


To the 100m athletes, you have your pace on the playground, which is the expression of hard sweat. You are like the clouds in the sky, with the gorgeous color of rosy clouds. The galloping horse and the galloping pace make your victory wait in front of you. I wish you all the best and cheer for you! To the 800m athletes, this is the tempering of time, this is the test of perseverance



The side view of a cylinder is a square with side length of 62.8 cm. What is the surface area of the cylinder in square centimeter?


The bottom radius of this cylinder is 62.8 △ 3.14 △ 2 = 10 cm
The surface area of this cylinder is:
3.14×10×10×2+62.8×62.8
=628+3943.84
=4571.84 (cm2)
Your so-called answer 364.2 is not right at all!
It must be clearly recognized that the side unfolded view is a square with a side length of 62.8 cm, not to mention the two bottom areas of the cylinder, but only the side area should be: 62.8 × 62.8 = 3943.84 square cm!



Xiao Ming wants to cut a circle with a diameter of 6cm. He should at least prepare a square with an area of () square centimeters


Xiao Ming wants to cut a circle with a diameter of 6cm. He should at least prepare a square with an area of (36) square centimeters
6 × 6 = 36 cm 2



A circle 16 cm, find its perimeter and area


Do you give 16 radius or diameter?
If it is radius, then, perimeter: 2 π r = 32 π (CM) area: π R2 = 256 π (cm2)
If it's diameter, then, perimeter: 2 π r = 16 π (CM) area: π R2 = 64 π (cm2)



For square and circle of equal area, the circumference of circle is longer than that of square? (true or false) and explain the reason


That's right
Suppose a ^ 2 = 3.14r ^ 2, compare 4A with 2 (3.14r)
Compare 16A ^ 2 with 4 (3.14r) ^ 2
Substitute a ^ 2 = 3.14r ^ 2 into the above



Under the same area, is the circumference of a circle or a square


∵πr^2=a^2
∴a=r√π
The perimeter of the square is 4A = 4R √π
The circumference of the circle is 2 π R
∵4√π>2π
∴4r√π>2πr
That is, the perimeter of a square is greater than that of a circle



Cut a maximum circle with a circumference of 18.84 cm from a piece of square paper, and calculate the area of the paper scraps to be cut?


18.84 ﹣ 3.14 = 6 (CM), 6 ﹣ 2 = 3 (CM), 6 × 6-3.14 × 32, = 36-3.14 × 9, = 36-28.26, = 7.74 (cm2). Answer: the area of paper scraps is 7.74 square cm



Cut a maximum circle with a circumference of 18.84 cm from a piece of square paper, and calculate the area of the paper scraps to be cut?


18.84 ﹣ 3.14 = 6 (CM), 6 ﹣ 2 = 3 (CM), 6 × 6-3.14 × 32, = 36-3.14 × 9, = 36-28.26, = 7.74 (cm2). Answer: the area of paper scraps is 7.74 square cm