A wheel makes 1200 revolutions in covering a distance of 60 km. Find the radius of the wheel.	Answers: A) 10.5m B) 11m C) 11.25m D) 11.45m E) None of these
Explanation: Distance covered in one revolution =((60X 1200)/1000)= 72m.   2πR = 72 =&gt; 2 x (22/7) x R = 72 =&gt; R = 72 x (7/44) = 11.45 m.   Answer: Option 11.45m
<result>D</result>
A wheel makes 1200 revolutions in covering a distance of 60 km. Find the radius of the wheel.