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  1. The radius of a wheel is 25 cm. How many rounds it will take to complete 11 km.
    1. 5000
    2. 6000
    3. 7000
    4. 4000
Correct Option: C

Distance covered bu whole in 1 revolution circumference of wheel

= 2πr = 2 ×
22
× 25cm
7

∴ Required number of revolutions =

=
11 × 100000 × 7
 = 7000
2 × 22 × 25


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