Question

the radius of A wheel of a bike is 39.9 CM if the wheel makes 6000 rotation in 1 minute how long will it take for the bike to cover a distance of 601.92 km

Answer 1

Solutions :-

Given :
Radius of a wheel of a bike = 39.9 cm


Circumference of wheel = 2πr units
= 2 × 22/7 × 39.9 cm
= 1755.6/7 cm
= 250.8 cm


Find the distance taken in 6000 rotation :-

Distance = 6000 × 250.8 = 1504800 cm


Convert cm into km :-

100000 cm = 1 km
1504800 cm = 1504800/100000 = 15.048 km


Find how long will it take for the bike to cover a distance of 601.92 km :-

15.048 km = 1 minute
601.92 km = (1 × 601.92)/15.048 = 40 minutes


Hence,
It takes 40 minutes for the bike to cover a distance of 601.92 km

Answer 2

circumference=2πr
2×22/7 ×39.9
5.4×44
237.6 m
so speed is 0.2376 m/s
so time=601920/0.2376
=2533333.33... sec
t=703.7 hrs