Math, asked by Manasag, 1 year ago

how long will a man take to make a of a circular field of radius 21 m.cycling at the speed of 8km/h?

Answers

Answered by Sarth45
14
To complete a round he covers distance equal to circumference

so

distance = 2 × pie ×r

=2×22/7×21

=132m

speed=8km/h

=8×5/18

=20/9m/s

time=distance /speed

=132÷20/9

=132×9/20

=6.6×9

=59.4 sec

= approximately 1 minute
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