Question

Find the distance covered by the wheel of a bus in 2000 rotation if the diameter of of the wheel is 98 cm.

Answer 1

First we need to find radius of the wheel=98/2=49.
Next we need to find circumference of wheel= 2$\pi$r
Therefore circumference=2 x 22/7 x 49
Circumference=308 cm.
Now to find distance we must multiply the number of rotations and circumference of wheel= 2000x308 = 616000 cm
Or 6160m or 6.16km.

Answer 2

diameter=98
circumference of the wheel=2pir
=(22/7×98)cm
=308cm
distance covered by the wheel=(308×2000)cm
=616000cm
=6.16km
ans.the bus covered 6.16km