Question

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

Answer 1

Answer:

Step-by-step explanation:

Refer to attachment

Answer 2

Not true as the distance traveled by a circular wheel of diameter d cm in one revolution is $\pi d$ cm.

Step-by-step explanation:

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

Solution :

The revolution of the circular wheel is measure by the circumference of the wheel.

The circumference of the wheel is $C=2\pi r$

We know, diameter is $d=2r$

So, $C=\pi d$

i.e. the distance traveled by a circular wheel of diameter d cm in one revolution is $\pi d$ cm.

Therefore, the given statement is not true.

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