Question

32. A particle is moving in a circle of diameter 20m.
What is its distance travelled in three rounds?​

Answer 1

3× 22/7×20

=3×440/7

= 1320/7

= 160 m

Answer 2

Answer:

188.4 m

Explanation :

diameter of the particle=20m

radius of the particle =20/2=10m

circumference of the circle=

$2\pi \: r$

$2 \times 3.14 \times 10$

$62.8m$

Distance travelled in one round is 62.8 m

distance travelled by the particle in three round is 188.4m