Question

The wheels of a car of diameter 80 cm each. how many complete revolution does each wheel make in 10 minutes when the car is travelling at 66 km /h​

Answer 1

Answer:

the answer is 4375 revolutions

Step-by-step explanation:

i hope this will help u

Answer 2

Answer:

• 4375 revolutions are made by the wheel.

Step-by-step explanation:

Given :-

• The wheels of a car are of diameter 80 cm.
• Car is travelling at a speed of 66 Km/h.

To find :-

• How many revolutions does each wheel make in 10 minutes ?

Solution :-

Diameter = 80 cm

Radius = 40 cm

Revolution (Circumference) = 2πr

(Distance travelled in one revolution) = 2 × 22/7 × 40

• 1760/7 cm

Speed = 66 Km/h

Time = 10 minutes

• 10/60 hours
• 1/6 hours

Distance = Speed × Time

• 66 × 1/6
• 11 Km

Number of revolutions = Total distance/Distance travelled in one revolution

Total distance = 11 Km

• 11 × 1000 m
• 11000 m
• 11000 × 100 cm
• 1100000 cm

Distance travelled in one revolution = 1760/7 cm

Number of revolutions = 11000000/(1760/7)

• 1100000/1760 × 7
• 625 × 7
• 4375

∴ Number of revolutions made by the wheel are 4375.