Question

Find the distance when a person completes 6 and half rounds in a circular field of radius 6 m

Answer 1

Answer:

12 m

Explanation:

because he first run 6m 2 run 6m total is12m

Answer 2

Answer: Required distance is 858/7 m.

Explanation:

Given radius of the circular field (R) = 6 m.

For completing the $6 \times \frac{1}{2}$

round of circle, the distance covered will be six and half of circumference of the circle i.e.$d=6 \times \frac{1}{2} πR = \frac{13}{2} \times \pi \times R = \frac{13}{2} \times \pi \times 6 = \frac{13}{2} \times \frac{22}{7} \times 6 = \frac{13 \times 11 \times 6}{7} = \frac{858}{7} \: \: m$

Displacement is the shortest distance between initial and final position, so the displacement will be just the diameter of circle. $S=2R = 2 \times 6 = 12 \: m$