The number of rounds that a wheel of diameter 7/11 metre will make in traversing 4 km
The number of rounds that a wheel of diameter 7/11 metre will make in traversing 4 km will be
(a) 500
(b) 1000
(c) 1700
(d) 2000
Answer: (d) 2000
Solution:-
The diameter of a wheel = 7/11
Therefore, the radius of the wheel = 7/2 x 11
= 7/22 m
Distance covered by wheel in a round = circumference of the wheel = 2 x pai x r
Then, distance covered by wheel in a round = 2 x 22 x 7/7 x 22
= 2 m
So ,the number of rounds in traversing 4 km = 4000/2
= 2000
Hence, the correct answer is option (d) 2000.