Question

a cyclist cycles around a circular field of diameter 21 m. find his distance and displacement after 2 and half round​

Answer 1

Answer:

Distance = 164.85 metres

Displacement = 21 metres

Explanation:

Given:

• Diameter of the circular field = 21 metres
• 2 and a half rounds were covered

To find:

• Distance after 2 and a half round
• Displacement after 2 and half round

Radius = $\frac{Diameter}{2}$

Radius = $\frac{21}{2} = 10.5 \ metres$

Distance = $2.5 \times 2 \times \pi \times 10.5$

Distance =$52.5 \times 3.14$

Distance =164.85 metres

As 2.5 rounds were covered, the displacement will be equal to the diameter of the circular field

Diameter = Displacement = 21 metres