RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 18. Area of Circle, Sector and Segment

Subject: Maths - Class 10th

Q. No. 2 of Formative Assessment (Unit Test)

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2

The diameter of a wheel is 84 cm. How many revolutions will it make to cover 792 m?

Diameter of wheel = 84 cm


Radius of wheel = r = 84/2 cm = 42 cm


Distance the wheel travels = 792 m = 79200 cm


In 1 revolution wheel travels 2πr distance


No. of revolutions a wheel makes =


=


= 300 revolutions

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