Question

The radius of a wheel of a cycle is 70cm and it takes 5 minutes to make 300 rotation. Find the speed of the cycle in km per hour
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Answer 1

Answer:The radius of wheel of a cycle is 70 cm and it take 5 minutes to make 300 rotations. find the speed of cycle in kilometre per hour - 1504781. ... So, 1 rotation = 1 second

Step-by-step explanation:

Answer 2

Radius =70cm

Distance covered in one rotation = circumference of wheel =2πr

=2×

7

22

×70

=440cm

Distance covered in 300 rotation =300×440

=132000=

100000

132000

=1.32km

Given that distance of 1.32km is covered in 5 minutes or

60

5

hour.

Therefore,

Speed of cycle =

time

distance

=

(

60

5

)

1.32

=

5

1.32×60

=15.84km/hr

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