Question

If a bicycle wheel makes 5000 revolutions moving 11 km, find the diameter of wheel

Answer 1

11×1000×100/5000
1100/5

1100/5=2πr=πd
1100/5=22/7×d
d=1100/5×7/22=70

therefore d=70cm

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Answer 2

Answer:

The diameter is 70 cm

Step-by-step explanation:

Let the radius of the wheel be r cm.

Distance covered by the wheel in one revolution =  

5000

11

​  

 km = 220 cm

2πr=220

2×  

7

22

​  

×r=220

r=35 cm

Diameter = 2r=70 cm

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