Q5 of 59 Page 122

Is it true that the distance travelled by a circular wheel of diameter d cm in one revolution is 2πd. Why?

False

The distance travelled by a circular wheel of radius r in one revolution is equal to the circumference of the circle.


Also, circumference of the circle = 2πd; where d is the diameter of the circle.


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In figure, a square is inscribed in a circle of diameter d and another square is circumscribing the circle. Is the area of the outer square four times the area of the inner square? Give reason for your answer.

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Is it true to say that area of segment of a circle is less than the area of its corresponding sector? Why?

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In covering a distance s m, a circular wheel of radius r m makes revolution. Is this statement true? Why?

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