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2014-11-06T21:50:26+05:30

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Diameter = 98 m
Perimeter = πD = π×98 = 308 m

speed of child = 14m/min

time = distance/speed = 308/14 = 22 minutes
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  • Brainly User
2014-11-06T22:22:15+05:30
Solution :
           Diameter of circular field = 98 m
therefore , Radius of circular field = 98/2 m =  49m

we know that Circumference of circular field = 2πr
                                                         = 2 *22/7*49
                                                         = 2*22*7
                                                          =44*7
                                 Circumference of Circular Field  =308m
Speed of Child = 14m / min
Therefore , time taken by the child to walk round the field =  circumference of circle/speed of child
                                     = 308 /14
                                   time taken   =22 minutes

Hope this helps You!!

Thank You!!!
Cheers!!!!!!!
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