৫ মিটার ব্যাসার্ধের বৃত্তাকার পথে এক বালক ৮ পাক সম্পূর্ণ ঘুরল। বালকটির সরণ কত মিটার?
To solve this problem, let's analyze it step-by-step:

Step-1: The boy travels around a circular path 8 times.

Step-2: Completing a full lap means the boy returns to the starting point.

Step-3: Displacement is the straight-line distance between the starting point and the ending point. Since the boy completes 8 full laps and returns to the starting point each time, so the change of position is zero

Step 4: After completing 8 full laps, the displacement of the boy is zero.

#Answer: 0 meters