a rectangular hall is measured 219meter by 210metre. How long will it take for a boy to take two rounds around the hall, if he walks at the rate of 2.5 metre/ second?
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Answer:
344 sec.
Step-by-step explanation:
speed= 2.5m/ s
distance= 2( 219 m +210)
= 860m
time= distance/ speed
= 860m / 2.5m/s
=344sec.
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