# The diameter of a circular field is 98 m. If a child walks at the rate of 14 m per minute, how long will it take for her to walk round the field once?

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by arjunsweety

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by arjunsweety

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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**

Perimeter = πD = π×98 = 308 m

speed of child = 14m/min

time = distance/speed = 308/14 =

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

Speed of Child = 14m / min

Therefore , time taken by the child to walk round the field = circumference of circle/speed of child

= 308 /14

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