# Math

posted by .

A bicycle wheel, diameter 56 cm, is making 45 revolutions in every 10 seconds. At what speed, in kilometer per hour. Is the bicycle travelling?

• Math -

45 rev/10sec * 56π cm/rev * 1km/100000cm * 3600sec/hr = 28.5 km/hr

• Math -

192

## Similar Questions

1. ### trig

How fast is a bicycle traveling in feet per second if a wheel has a 21-in. diameter and the angular speed of the wheel is 33 radians per second?
2. ### Math

A bicycle wheel is 30 inches in diameter. a. to the nearest revolution, how many times will the wheel turn if the bicycle is ridden for 3 miles. b. suppose the wheel turns at a constant rate of 2.75 revolutions per second. What is …
3. ### Geometry

The wheel of an adult's bicycle has diameter 26 in. The wheel of a child's bicycle has diameter 18 in. To the nearest inch, how much farther does the larger bicycle wheel travel in one revolution than the smaller bicycle wheel?
4. ### Math

A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?
5. ### Math

A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?
6. ### algebra

The wheel in a bicycle has a diameter of 2 feet. if the wheel is turning at 50 rpm (revolutions per minute), how far, in feet, will the bicycle travel in 20 minutes?
7. ### math

a wheel of a bicycle has a diameter of 70cm and is rotating at the rate of 200 revolutions per minute calculate the speed of the bicycle in km/hour
8. ### math

The diameter of a bicycle wheel is 65cm. How far does the bicycle go in 20 revolutions of the wheel
9. ### geometry d the sspeed of the bicycle in m/s

a bicycle wheel has 77cm in diameter and makes revolution per second .find the speed of the bicycle in m/s
10. ### college algebra

In a certain gear, a bicycle tire with a diameter of 27 inches makes 3 complete revolution of the pedal.If a cyclist is pedaling at a rate of 100 revolutions per minute, find the speed of the bicycle in miles per hour?

More Similar Questions