Question

the diameter of a circular wheel is 35cm how many revolutions will it make in moving 22km.​

Answer 1

Answer:

Step-by-step explanation:

Diameter=35cm

Radius=35/2 cm

Circumference=2πr=2*(22/7)*(35/2)=110cm

Length of road=22km=2200000cm

Revolutions=2200000/110=20000

Answer 2

Answer:

20000 revolutions

Step-by-step explanation:

Diameter = 35 cm = 0.00035 km

Radius = 35/2 cm = 0.00035/2 km

Circumfernce = Perimeter = 2πr = 2 x 22/7 x 0.00035/2

= 22 x 0.00035 / 7 km

Distance per revolution = 0.0011 km

Also, No of revolutions moving 22 km = 22/0.0011 = 20000 revolutions

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