Question

The radius of wheel is 1.4 diameter .how many times does it revolve during a journey of 0.66 km.?

Answer 1

The radius of wheel is 1.4 m. It revolves 75 times during a journey of 0.66 km.

[ We consider the wheel to be of radius 1.4 m ]

Step-by-step explanation:

The radius of the wheel is 1.4 m

Then its circumference is

= 2π * radius

= 2π * 1.4 m

= 2* 22/7 * 1.4 m

= 8.8 m

Let the wheel revolves n times to cover 0.66 km = 660 m

Then,

8.8 * n = 660

or, n = 660/8.8

or, n = 75

∴ the wheel revolves 75 times during a journey of 0.66 km

Rules:

If r be the radius of a circle, then its circumference be 2πr.

Similar type of problems:

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Answer 2

Answer:

here is ur answer

Step-by-step explanation:

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