Question

(b)
How long will a boy take to go three times round the field, if he walks at the rate of
1.5 metre per second?
and its length is 17 cm. Find the breadth of the​

Answer 1

Answer:

Given length of playground = 80 m width of playground = 35 m

Perimeter (length of boundary) = 2(1+b) = 2(80+35) = 115 x 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:

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