Circle

Qn. A wheel makes 1000 revolution in a covering a distance of 88km.Find th radius of the wheel?

Soln

Here We could see that ,the wheel  completes  one revolution at 2π distance. Here radius is 1.

in general a wheel covers a distance of  2πr in one Revolution.

Given 1000 revolution = 88 km

                                      =88000 meter.

      Then 1 Revolution = 88 meter.

                               2πr = 88

                     2 ×22/7× r = 88

                         44/7 × r = 88

                                 r/7 = 2

                                     r=14

Dear friends , Solve withought using LCM