When a cyclist rides a cycle , the wheel of the cycle having radius of 77cm makes 500 revolutions in 5 minutes. Find the speed of the cycle in km per hour.
Answers
Answered by
1
Answer:
Radius of the wheel =r=
2
60
=30 cm
Circumference of the wheel =2πr=2×
7
22
×30=
7
1320
cm
Distance covered in 1 revolution =
7
1320
cm
Distance covered in 140 revolutions =
7
1320
×140=26400 cm=264 m=
1000
264
km
Distance covered in one minute = Distance covered in 140 revolutions =
1000
264
km
Distance covered in 1 hour =
1000
264
×60=15.84 km
Hence, the speed with which the boy is cycling is 15.84km/hr.
Answered by
1
Answer:
yes the above ans is correct
Step-by-step explanation:
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