Question

the radius of a wheel is 7 cm. how many revolutions will it make in moving 44 km​

Answer 1

Answer:

100,000

Step-by-step explanation:

answer : 100000

distance =44000m

circumference of the wheel =2πr

=2*22/7*7

=44cm =.0.44 m

no. of revolutions = distance / circumference

=44000/0.44

=100,000 revolutions

Answer 2

Given,

The radius of the wheel is 7 centimeters.

The total distance is 44 kilometers.

To find,

The number of revolutions the wheel needs to make to cover the total distance.

Solution,

Firstly, we will have to convert all the parameters into meters.

The radius of the wheel in meters will be 0.07 meters.

The total distance in meters will be 44,000 meters.

Now, the circumference of the wheel is [2 (3.14) (0.07) ] =  0.4396 centimeters

So, the circumference of the wheel is approximately 0.44 centimeters.

The number of revolutions will the ratio between the total distance and the circumference.

So, number of revolutions is ( 44,000 / 0.44 ) = 1,00,000.

Hence, the number of revolutions made by the wheel to cover the distance is 1,00,000