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If the radius of a wheet is 35 cm, then ...

If the radius of a wheet is 35 cm, then find how many times it should rotate to cover a distance of 33 m.

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If the radius of a wheel is 21 cm, then find how many times it should rotate to cover a distance of 264 m. (A) The circumference of the wheel =2pirxx2xx(22)/(7)xx21 (given r = 21 cm) (C) therefore The circumference of the wheel = 132 cm (C) "Number of rotations"=(26400cm)/(132cm)=200 (D) Number of rotatins =("Distance to be covered")/("Circumference of the wheel") (It is given that distance = 264 m and circumference = 132 cm)

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If the radius of a wheel is 42 cm and it makes 20 rotations in 1 h, then find the time taken by the wheel to cover a distance of 528 m. The following steps are involved in solving the above problem. Arrange them in sequential order. (A) Time taken to complete 200 rotations =200xx(1)/(2)=10h (B) The number of rotations required to cover a distance of 528m =("Distance")/("Circumference")=(528m)/(264cm)=(52800)/(264)=200 (C) The distance covered by the wheel in "1 rotation"="Circumference of the wheel"= 2pir=2xx(22)/(7)xx42=264cm (D) Time taken to make 20 rotations = 1 h

PEARSON IIT JEE FOUNDATION-MENSURATION-TEST YOUR CONCEPTS (Short answer Type Questions)
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