the length and breadth of a playground are 80 metre and 35 metre respectively how long will a boy take to go three times round the field,of he walks at rate of 1.5m per second?
Answers
Step-by-step explanation:
length is 80 m
breadth is 35 k
Rate of walking is 1.5m/s
distance covered by boy = 3 × perimeter of playground
=3×2(length+ breadth)
=6(80+35)
=6×115
=690 m
time taken by boy to cover distance = distance/rate of walking
=690/1.5
=460 Seconds
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Answer:
The boy will take 460 seconds or 4 minutes 20 seconds to go three times round the field.
Step-by-step explanation:
Given,
Length of playground = 80 m
Breadth of playground = 35 m
Number of rounds the boy needs to go round the field = 3 times
Number of metres the boy will go = 3*{2*(80+35)}m
= 690 m
Speed of the boy = 1.5 ms^-1
Time which will be taken by the boy = 690/1.5
= 1380/3
= 460 seconds
Therefore, The boy will take 460 seconds or 4 minutes 20 seconds to go three times round the field.