Question

1 km 56 metres?
The diameter of a wheel of a bus is 112 cm. How many revolutions will it make to cover​

Answer 1

Step-by-step explanation:

Diameter of the wheel =80cm

Speed of the car =66km/h

Radius of the car wheel =

2

diameter

=

2

80

=40cm.

Distance covered by the car in one complete revolution = circumference of wheel =2πr=2∗

7

22

∗40cm.

Distance covered by the car in 1 hour (60min) =66km

Distance covered by the car in 10minute =

60

66

×10=

6

66

=11km=11km=11∗1000m [1km=1000m]

=11000m=11000∗100cm

Number the revolutions made by the wheel in 10 minute

=

distance covered by the car in one complete revolution

distance covered by the car in 10 minutes

=

(2×22×40)

(1100000×7)

=4375

Hence,each wheel makes 4375 Revolutions in 10 minutes.

Answer 2

Answer:

1.39

Step-by-step explanation:

According to my calculation it is 1.39. I hope it helps :D