A rectangular field is 72 m by 58 m. Amar walks round it at the rate of 3 km /hr. What will be the time he take In taking 2 rounds.
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Answer:
10.4 minutes
Step-by-step explanation:
First we have to find the perimeter of the rectangular field :
Length = 72m
Breadth = 58m
Perimeter = 2 ( length + breadth )
= 2 ( 72 + 58 )
= 2 ( 130 )
= 260m
As he is to walk 2 rounds,
The length Amar is going to walk = 260 * 2 = 520m
Time taken by Amar to walk 3000m ( 3km ) = 60 minutes ( 1 hour )
Time taken by Amar to walk 520m ( 0.52km ) = 60 * 520 / 3000
= 31200 / 3000
= 10.4 minutes
Therefore, the time taken by Amar to walk 2 rounds around the rectangular field is 10 minutes and 40 seconds.
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