Question

. The wheels of a car are of diameter 80 cm each. How many complete revolutions does
each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour?.........guyz solve fast ​

Answer 1

Step-by-step explanation:

given:

diameter= 80cm

radius=40cm or 0.4m

also the speed of the car is 66 km/hr or

66km×1000/1hr×60.

=1100m per minute

so in 10min it covers 1100×10=11000m

now in one Revolution the car covers 2πr distance or the circumference.

that is 2× 3.14 × 0.4= 2.512m.

so to cover 2.512m it takes 1 Revolution to cover 11000m it will take

11000/2.512

or

4378.98 revolutions

hope the answer is correct