Answer:
6.28 cm
Step-by-step explanation:
One wind of thread is the circumference of the circular spool.
Th circumference (C) of a circle is calculated as
C = πd ( d is the diameter )
here d = 2 cm and using 3.14 for π , then
C = 3.14 × 2 = 6.28 cm
One wind of the thread is 6.28 cm long
