Question

An athlete runs in a track that is in the shape of a semicircle and returns to the starting point without repeating his path. If the radius of the semicircle is 21m, what is the length of the path he ran?

Answer 1

Answer:

32.97 cm

Step-by-step explanation:

1/2πr

so,

1/2*3.14*21

32.97 cm