Answer:
Now, distance covered by in one round = Perimeter of park \[\therefore \]Perimeter of square park \[=4\times \]Length of a side \[=4\times 75m=300m\]and distance covered by Bulbul in one round = Perimeter of rectangle \[=2\times \] (Length + Breadth) \[=2\times (60+45)m=2\times 105m=210m\] Since, \[300\text{ }m>210m\] Hence, Bulbul covers less distance.
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