# 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?

2
by arjunsweety

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
• 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

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