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  1. The diameter of a circular wheel is 7 m. How many revolutions will it make in travelling 22 km?
    1. 100
    2. 400
    3. 500
    4. 1000
Correct Option: D

Using Rule 7,
Distance covered by the wheel in one revolution = πd

=
22
× 7 = 22 metre
7

∴ Number of revolutions =
22 × 1000
= 1000
22



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