RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 18. Area of Circle, Sector and Segment

Subject: Maths - Class 10th

Q. No. 19 of Multiple Choice Questions (MCQ)

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19

The diameter of a wheel is 40 cm. How many revolutions will it make in covering 176 m?

Diameter of wheel = 40 cm


Radius of wheel = r = 40/2 cm = 20 cm


Distance the wheel travels = 176 m = 17600 cm


In 1 revolution wheel travels 2πr distance


No. of revolutions a wheel makes =


=


= 140 revolutions

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