Question

the wheel of a car is diameter is 80cm each how many complete revolution does each wheel make in 10 minute when the car is traveling at space of 66 km per hour​

Answer 1

$\huge \dag \: { \boxed{ \underline{ \sf{ \pink{Answer}}}}}$

The diameter of the wheel of the car = 80 cm

So the Radius (r) of the wheel of the car = 40 cm

Now Calculating the Circumference of wheel =

$\sf \: 2πr = 2π (40) = 80π cm$

Speed of car = 66 km/hour

Speed(cm/min)= 110000 cm/min

Distance travelled by the car in 10 minutes = 110000 × 10 = 1100000 cm

Let the number of revolutions of the wheel of the car be p.

So, equating it now 

We get, p × Distance traveled in 1 revolution = Distance traveled in 10 minutes

$\sf \: 80π * p = 1100000$

p = 4375

Hence, each wheel of the car will make 4375 revolutions.