Posted by **Aravind** on Wednesday, February 23, 2011 at 11:44am.

The radius of a wheel is 7 cm. In covering 44 km, how many revolutions will it make?

- Maths -
**drwls**, Wednesday, February 23, 2011 at 11:51am
N = 44,000 m/(2*pi*0.07 m)

= 100,000 (rounded to 4 sig. figures)

- Maths -
**Ms. Sue**, Wednesday, February 23, 2011 at 11:53am
C = pi * d

C = 3.14 * 14

C = 43.96 cm = 0.4396 meters

1 km = 1000 m

Take it from there.

## Answer This Question

## Related Questions

- maths - a car travels 1 km in which each wheel makes 450 revolutions. Find the ...
- Math - A bicycle travels 42 meters for every 20 revolutions of the wheel. How ...
- Math - A bicycle travels 42 meters for every 20 revolutions of the wheel. How ...
- 6th grade - a bicycle wheel must make 13 revolutions to roll 25 meters. How many...
- physics - A bicycle wheel of radius 0.4 m is spinning at a rate of 40 ...
- math - Wheel X with radius 5 makes 5 revolutions along a road, and wheel Y with ...
- T. P. C - The radius of a wheel is 50 cm. The number of revolutions it will make...
- Maths - The diameter of wheel is 28 cms .how many revolutions will it make in ...
- Physics - A bike wheel rotates uniformly through 2 revolutions in 3 seconds. a) ...
- maths - find the number of revolutions taken by the wheel of a truck to cover a ...

More Related Questions