Question

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

Answer 1

Diameter of circle= 98cm
radius of circle=49 cm = 0.49m
circumference of circle=2 πr=2×22/7×0.49=3.08
distance covered by one rotation=3.08m
distance covered by 2000 rotation=3.08×2000=6160m

Answer 2

if d is 98
then r is 98/2 that is 49cm
circumference of wheel is 2* pi * r
2 * 22/7 * 49= 308

distance covered is no. of rotation * circumference of circular wheel...
308*2000
616000 cm