Question

the length and breadth of a playground are 80m and 35m respectively.
2) how long will a boy take to go three times round the field, if he walks at a rate of 1.5m per second?


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Answer 1

Answer:Given length of playground = 80 m

width of playground = 35 m

Perimeter (length of boundary) = 2(l+b)

=2(80+35)=115×2

length of boundary = 230 m

For 3 rounds length = 230×3=690m

now time taken to boy to cover 1.5 m = 1 sec

then time taken to cover 690 m = 6900/1.5

Total time taken = 4600 sec

∴ Time taken to complete 3 rounds of field is 4600 seconds.

Step-by-step explanation:

Answer 2

Answer:

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