Question

the radius of the wheel of a car is 35 cm how many Revolution will it take to travel 33 km

Answer 1

Radius of a wheel = 35 cm

Distance to be covered = 33 km = 3300000 cm

Now,
----------

Circumference of the circle = 2 × π × r

=> (2 × 22/7 × 35) cm

=> 220 cm

So,
------

Number of revolutions required to cover 33 km or 3300000 cm =

3300000/220 revolutions

= 15000 revolutions

HOPE IT HELPS

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Answer 2

Answer:

If you read it twice through, you realize that the answer needs to be in meters, not centimeters.  Therefore, convert the

 

35 cm to meters.         100 cm = 1 meter

 

                                   35 cm=  .35 meter

 

 

1 revolution= one complete time around the wheel        The distance around the wheel or circle=  Circumference

 

               

Use the circumference formula:          C=2πr      2 (3.14)(.35) ≅ approximately equal to 2.198 M= 1 Revolution

 

At this point you can divide 88 by 2.198 to find out how many revolutions it would take for 88 meters, or you can set

 

up a proportion as follows:           2.198 meters/ 1 revolution  ≅  88 Meters/ X revolutions .

 

Cross multiply, and you get          88 ≅2.198X                88/2.198  ≅  40.036 revolutions.   

I Hope it will help!
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