Question

A cyclist travels 3/4 of a circular track from a to b as shown in figure. The radius of the circular track is 400m.
What is the distance travelled by the cyclist?
What is the displacement?

Answer 1

Distance travelled = 2πr(3/4) = 600π = 1884.955592
Displacement = √( 400² + 400² ) = 565.6854249

Answer 2

Answer:

Radus given = 400 m

Distance travelled = 2πr×(3/4) =2 ×  22/7×400×3/4 = 1884.96m

ii)The displacement is the shortest path between A and B,  i.e AB =√(〖AO〗^2+〖OB〗^2 )=√(〖400〗^2+〖400〗^2 )=565.69m

Explanation: