Xiaohong and Xiaogang go home after school. Xiaohong walks one fifth more than Xiaogang, and Xiaogang spends one eleventh less time than Xiaohong. Then the speed ratio between Xiaohong and Xiaogang is ()

Compare the distance and time of two people respectively, the distance ratio of Xiaohong and Xiaogang is (1 + 1 / 5): 1 = 6:5 (note, here Xiaogang is unit 1, The time ratio between Xiaohong and Xiaogang is 1: (1-1 / 11) = 11:10 (do not reverse the order), so the speed ratio between Xiaohong and Xiaogang is (6 / 11): (5 / 10) = 12:11 (distance divided by time = speed)

The circumference of the bottom surface of a cylinder is 15.7cm, the height is 10cm, its side area is () CM & sup2;, and its volume is () CM & sup3;
The volume of a cylindrical bucket is 30 liters, the area of the bottom of the bucket is 5DM & sup2;, it contains 2 / 3 bucket of water, and the height of the water surface is () DM

The circumference of the bottom surface of a cylinder is 15.7cm, the height is 10cm, the side area is () CM & sup2;, the volume is () CM & sup3; the side area is 15.7 × 10 = 157 (square centimeter), the radius of the bottom surface is 15.7 ﹣ 3.14 ﹣ 2 = 2.5 (centimeter), the volume is 2.5 × 2.5 × 3.14 × 10 = 196.25 (cubic centimeter)

1. Xiaojie will deposit 1500 yuan in the bank with a monthly interest rate of 1.1%. After half a year, she will pay 20% interest tax, so Xiaojie can get after tax interest Yuan
2. The central angle of a sector is reduced to one fourth of the original one, and the radius is expanded to three times of the original one. The sector area is three times of the original one__ (fill in a fraction)

Xiaojie deposits 1500 yuan into the bank with a monthly interest rate of 1.1%. After half a year, she needs to pay 20% interest tax, so Xiaojie can get 79.2 yuan after tax interest
The central angle of a sector is reduced to one fourth of the original, and the radius is expanded to three times of the original. The sector area is 9 π / 360 ° of the original sector area

A cuboid room, 5.2 meters long, 3.6 meters wide, 6 meters, the lower part of his four walls are painted with 1.1 meters high paint, the painted area is () square meters, 1 square meters at the door
A bottle of pure alcohol weighs 200 grams, and 20 grams is used. At this time, the alcohol concentration is ()%

A cuboid room is 5.2 meters long, 3.6 meters wide and 2.6 meters high. The lower parts of its four walls are painted with 1.1 meters high paint. The painted area is (18.36) square meters, and the door opening is 1 square meter
A bottle of pure alcohol weighs 200 grams, 20 grams is used, and the alcohol concentration is (100)%

The volume and bottom area of a cylinder and a cylinder are equal. Given that the height of a cylinder is 6dm, then the height of a cone is ()
Pour 27dm of water into a 9dm high cone with an area of () DM;

(1) Filling: 18dm
Because the volume of a cone is one third of that of a cylinder, if the volume is equal, the height of a cone is three times that of a cylinder
6x3=18
(2) Fill in: 9
27=s*9/3
s=9

A three place decimal is rounded to 4.60, so there are () three place decimal?

10
4.600 4.601 4.602 4.603 4.604
3.595 3.596 3.597 3.598 3.599

Translation doesn't change the size and perimeter of the figure, does it

That's right. Translation only changes the position of the figure, not the size and perimeter of the figure
I wish learning every day, do not understand can continue to ask me

A ship sails 10km from port a to port B 60 ° NBE, and then sails 10km to port C 30 ° NBW
(1) Find the distance between a and C ports

The triangle ABC is a right triangle and the angle B is a right angle;
According to Pythagorean theorem AC ^ 2 = AB ^ 2 + BC ^ 2, we get that
AC^2=10^2+10^2
AC = 10 radical (2
)

It's a math problem. You have to draw your own graphics
In the isosceles trapezoid, if the upper and lower bottom are parallel, the diagonal AC bisects ∠ bad, ∠ B = 60 degrees, and the upper bottom is 2, what is the area of the trapezoid ABCD?

Triple root 3
Angle DAB = angle B = 60 degree bisector parallel angle DAC = angle cab = angle DCA = 30 degree ad = CD = 2 = BC (isosceles) provable angle BCA = 90 degree AB = 2BC = 4
According to Pythagorean theorem, the height of a special right triangle is root 3, and the trapezoidal area formula is three times root 3

How to draw this picture?
How to draw the vector b = 40? The angle between the direction of B and the positive direction of X axis is 30 ° and the angle between the direction of B and the positive direction of Y axis is 120 °
Bye, I want it before tonight,
The main reason is that I don't have any points, otherwise I'll give them all

The angle between vector B and X axis in the fourth quadrant is 30 degrees
If you want to draw the length, the abscissa of the end point of that vector is 20

Xiaohong and Xiaogang go home after school. Xiaohong walks one fifth more than Xiaogang, and Xiaogang spends one eleventh less time than Xiaohong. Then the speed ratio between Xiaohong and Xiaogang is ()