# A cyclist starts from the center 𝑂 of a circular park of radius one kilometer, reaches the edge 𝑃 of the park, then cycles along the circumference and returns to the center along 𝑄𝑂 as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in meter and kilometer per hour) is

Question : A cyclist starts from the center 𝑂 of a circular park of radius one kilometer, reaches the edge 𝑃 of the park, then cycles along the circumference and returns to the center along 𝑄𝑂 as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in meter and kilometer per hour) is

(A) 0,1

(B) $\dfrac{\pi +4}{2}$, 0

(C) 21.4, $\dfrac{\pi +4}{2}$

(D) 0, 21.4