The diameter of the wheel of a car is 120m. How many revolution/min must the wheel makein order to keep a speed of 60 km/hour approximately?	Select the correct option.
A) 210  B) 245  C) 230  D) 254  E) 265
Distance to be covered in 1 min. = (60 X 1000)/(60) m = 1000 m.   Circumference of the wheel = (2 x (22/7) x 0.60) m = 3.77 m.   Number of revolutions per min. =(1000/3.77) = 265   265
<result>E</result>
The diameter of the wheel of a car is 120m. How many revolution/min must the wheel makein order to keep a speed of 60 km/hour approximately?