Question

the wheel of a car are of diameter 80cm each. how many completely revolution does each wheel make in 10 minutes when the car is traveling at a speed of 66km per hour?​

Answer 1

Answer:

4375 revolutions

Step-by-step explanation:

Speed = 66 km/hr

           = 55/3 km/hr

Time = 10 min

        = 10 * 60 sec

        = 600 sec

Distance = Speed * Time

               = 55/3 * 600

               = 11000 m

Circumference of wheel = 2πr

                                        = 2 * 22/7 * 0.4

                                        = 17.6/7

Let number of revolutions be x. Then,,

17.6/7 * x =  11000

x = 11000 * 7/17.6

x = 4375

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