![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
The outer diameter of the train wheel is 0.8 meters. If it rotates 400 times per minute, how many kilometers does the train travel per hour
three point one four × zero point eight × four hundred × 60÷1000
=2.512 × four × six
=60.288 (km)
A: the train travels 60.288 kilometers per hour
The radius of the driving wheel of a train is 0.75 meters. If it rotates 400 times per minute, how many meters can the train advance per hour?
1 hour = 60 minutes,
two × three point one four × zero point seven five × four hundred × sixty
=4.71 × four hundred × sixty
=1884 × sixty
=113040 (m)
A: this train can travel 113040 meters per hour
The diameter of the driving wheel of the train is 1.5 meters. If you turn 200 times per minute, how many meters per minute?
3.14x1.5x200 = 942 (m)
The outer diameter of the train wheel is 0.9 meters long. If it rotates 400 times per minute, how many kilometers does the train travel per hour?
three point one four × zero point nine × 400，
=2.826 × 400，
=1130.4 (m);
1130.4m = 1.1304km;
1 hour = 60 minutes,
one point one three zero four × 60 = 67.824 (km);
A: the train travels 67.824 kilometers per hour
The diameter of the driving wheel of the locomotive is 1.5 meters. If it rotates 400 times per minute, how many kilometers does the train travel per hour
3.14*1.5*400*60
=113.040km
The outer diameter of the train wheel is 0.9 meters long. If it rotates 400 times per minute, how many kilometers does the train travel per hour?
three point one four × zero point nine × 400，
=2.826 × 400，
=1130.4 (m);
1130.4m = 1.1304km;
1 hour = 60 minutes,
one point one three zero four × 60 = 67.824 (km);
A: the train travels 67.824 kilometers per hour
RELATED INFORMATIONS
- 1. The diameter of the driving wheel of the train is 1.5 meters. How many hours does it take to travel 28.26 kilometers if it turns 300 times per minute
- 2. There are bicycles and cars in the parking lot. The number of bicycles is three times that of cars. There are 150 wheels for the two kinds of cars. How many bicycles and cars are there respectively? Don't use the X method, thank you
- 3. The circumference of a semicircular piece of paper is 10.28 decimeters, and its area is______ Square decimeter
- 4. The circumference of a semicircle is 25.7 decimeters, and the area of this semicircle is () square decimeters
- 5. Judge whether the triangle ABC satisfying the following conditions is an acute triangle, a right triangle or an obtuse triangle ∠A-∠B=30°,∠B-∠C=36°
- 6. Draw a figure with 2 right angles, 2 obtuse angles and 1 acute angle
- 7. Triangle sine cosine theorem In the unequal edge △ ABC, a is the largest edge and a ^ 2
- 8. Brake the train before entering the station. It is known that the train speed before braking is 60km / h and the braking acceleration is 0.8m/s2. Calculate the train speed 15s and 30s after braking
- 9. The train advances at the speed of 20m / s. when passing station a, it needs to stop for 120s. The acceleration when entering the station is -0.5m/s2, and the acceleration when leaving the station is 0.4m/s2. After leaving the station, it still needs to move forward at the speed of 20m / s. how much longer does the whole train run because the train stops at station a?
- 10. For a train moving in a straight line with uniform speed change, the speed increases from 10m / s to 15m / s within 50s. What is the acceleration of the train?
- 11. The diameter of the train wheel is 1.5 meters. The diameter of the train wheel is 1.5 meters. If the wheel rotates 300 cycles per minute, how many minutes does it take to travel 28.26 kilometers?
- 12. In the obtuse triangle △ ABC, ∠ A is the obtuse angle ∠ B = 60 °, find the range of ∠ C
- 13. In △ ABC, the length of edges a and B is the two roots of equation x2-5x + 2 = 0, C = 60 °, find the length of edge C
- 14. In triangle ABC, sin is known ² A+sin ² B+sin ² C = 2, then the triangle is? emergency
- 15. A 200m long train passes through an iron bridge at a constant speed of V = 54km / h for 2min. Find the length of the iron bridge?
- 16. The railway passes near Qinglong bridge, and the slope is very large. How can the train climb such a steep slope? What rhetorical devices are used
- 17. When did Zhan Tianyou build the Beijing Zhangjiakou Railway
- 18. The Qing government appointed Zhan Tianyou as the chief engineer to build the railway from Beijing to Zhangjiakou!
- 19. A 200 meter long train passes through a tunnel at a speed of 4 meters per second for 240 seconds. How long is the tunnel? Calculation problem: a 200m long train passes through a tunnel at the speed of 4m / s for 240 seconds. How long is the tunnel? [write down the process as required
- 20. The railway between the two stations is 1464 kilometers long. Two trains leave from the two stations at the same time. It is known that the speed of one train is 63 kilometers and the speed of the other train is 59 kilometers per hour. How many kilometers did each line travel when they met?