117. The radius of the wheel of a vehicle
is 70 cm. the wheel makes 10 revolutions
in 5 seconds. The speed of the vehicle is
a) 29.46 km/hr
b) 31.68 km/hr
c) 36.25 km/hr
d) 32.72 km/hr
Answers
Answered by
3
Answer:
Answer: Option B
Solution
Distance covered in 5 sec :
=(2×227×70×10)cm=4400cm=44m
Distance covered in 1 sec :
=(445)m=8.8m
∴ Speed :
=8.8m/sec=(8.8×185)km/hr=31.68km/hr
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