Question

Rihan noticed that each wheel of his bicycle had diameter of 1.75 m. Find the number of complete revolutions
of each wheel, if he has to bicycle a distance of 22 km.​

Answer 1

Answer:

Diameter of circular wheel =2r=56cm

Circumference =2πr=π(2r)=56πcm

1 revolution of wheel covers distance equal to its circumference =56πcm

Total distance covered by wheel =1.1km=1.1∗1000m=1100m=1100∗100cm=110000cm

Total Distance = Number of revolutions ∗ 1 revolution distance

Number of revolutions =

1revolutiondistance

TotalDistance

=

56π

110000

=625.25≈625

The number of revolutions made by a bicycle wheel 56 cm in diameter in covering a distance of 1.1 km is 625