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The wheels of a car make 2500 revolution...

The wheels of a car make 2500 revolutions in covering a distance of 4.95 km. Find the diameter of a wheel.

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The correct Answer is:
`63cm`
Distance covered in 1 revolution `=((4.95xx1000xx100)/2500)cm=198cm`
`2piR=198implies2Rxx22/7=198implies2R=(198xx7/22)=63cm`
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RS AGGARWAL-AREA OF CIRCLE, SECTOR AND SEGMENT -Exercise 16A
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  2. The wheels of the locomotive of a train are 2.1 m in radius. They make...

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  3. The wheels of a car make 2500 revolutions in covering a distance of 4....

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  4. A boy is cycling such that the wheels of the cycle are making 140 r...

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  5. The wheel of a motor cycle is of radius 35 cm. How many revolutions pe...

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  6. The diameters of the fron and rear wheels of a tractor are 80 cm and 2...

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  7. Four equal circles are described about the four corners of square so ...

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  8. Four equal circles each of radius 5 cm, touch each other, as shown in ...

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  9. Four circles each of radius ' a ' units touch one another. The a...

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  10. Three equal circles, each of radius 6 cm, touch one another as shown i...

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  11. If three circles of radius a each are drawn such that each touches the...

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  12. In the given figure ABCD s a trapezium of area 24.5cm^(2). If AD||BC, ...

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  13. ABCD is a field in the shape of a trapezium, AD||BC,/ABC=90^(@) and /A...

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  14. Find the area of the shaded region in the given figure, where a circul...

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  15. In the given figure, ABCD is a rectangle with AB=80cm and BC=70cm, /AE...

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  16. In the given figure, from a rectangular region ABCD with AB=20cm a rig...

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  17. In the given figure O is the centre of the circle with AC=24cm, AB=7cm...

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  18. In the given figure, a circle is inscribed in an equilateral triangle ...

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  19. The perimeter of the quadrant of a circle is 25 cm. Find the area.

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  20. A chord of a circle of radius 10 cm subtends a right angle at the cen...

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