Question

Ram goes for a morning walk in a circular Park Daily.he completes one revolution of the park in 4minutes.find his speed if the diameter of the park is 420m

Answer 1

Hey

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Given Diameter of the circular park =420m

So. its Radius=(420/2)m
=210 m=


Now DISTANCE COVERED IN 1 REVOLUTION = CIR. OF CIRCLE 
$= 2 \times \frac{22}{7} \times r$
$= 2 \times \frac{22}{7} \times 210 \\ = \frac{44}{7} \times 210 \\ = 44 \times 30 \\ = 1320m$
Now Time Taken
$= 4m =( 4 \times 60)s$

$= 240seconds$
As we know

$speed = \frac{distance}{time}$
$= \frac{1320}{250}$

=5.5 m/s

Answer 2

Given Diameter of the circular park =420m

So. its Radius=(420/2)m
=210 m=


Now DISTANCE COVERED IN 1 REVOLUTION = CIR. OF CIRCLE  


Now Time Taken 



As we know 




=5.5 m/s
 
here is your answer -_-   -_-