Question

A carriage wheel makes 1500 revolutions in going for a distance of 4.5 km find the radius

Answer 1

distance =4.5 km = 4500 m
1500×2π×r = 4500
r=3÷(2π)
where π=3.14(approx.)
then, r=3÷ 6.28=0.4777m=47.77cm

Answer 2

Answer:

47.8 (rounded of the decimal place)or 48.771