Answer:
40.192cm
Explanation:
the circumference of a circle = ?
radius = 6.4cm
recall that,
circumference of a circle = 2πr
circumference of a circle = 2 x 3.14 x 6.4cm
circumference of a circle = 40.192cm
therefore the circumference of a circle whose radius is 6.4cm is evaluated to be equals to 40.192cm.
the answer to your question is option B 40.192cm