A wheel has the diameter of 80cm. What distance will the wheel travel forward when it completes 10 full rotations
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Step-by-step explanation:
Given
Diameter of wheel (D)=80 cm
Radius (r)=
2
80
=40 cm.
1 complete revolution of wheel = Circumference of wheel (C)
C=2πr=2π×40=80π cm
C=0.8π m
Speed of the car =66 km / hr.=
60
66×1000
m/ min.
∴ Speed of the car =1100 m / min.
Therefore, in 10min., the car will travel a distance of 1100×10=11000 m
No. of revolutions of wheel =
0.8π
11000
=
0.8×22
11000×7
=4375
Each wheel of the car makes 4375 complete revolutions in 10 min.
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