Question

A cyclist moves from a certain point X and goes round a circle of radius $r$ and reaches Y which is exactly at the other side of the circle to the point X as shown in the given figure.
The distance covered by the cyclist would be:

• A. $\pi r$
• B. $2\pi r$
• C. $2r$
• D. $\frac{2\pi }{r}$

Answer 1

The correct option is A $\pi r$

As per the question , the cyclist completes half a circle of radius 'r'
Distance travelled by the cyclist is $=\pi r$