Question

Help please to make sure I am correct :) A circle that originally had a circumference of 31.4 cm, now has a circumference of 15.7 cm. What happened to the radius?

Answer 1

Is the radius halved?

Answer 2

Yep your corect! ;) Nice job~

Answer 3

the relation between the circumference and the radius is

C = 2 * pi * r where pi is a constant

Answer 4

Yea, thank u! :)

Answer 5

makes sense some how lol

Answer 6

31.4 = 2pi r making r = 31.4 / 2 pi

15.7 = 2 pi r making r = 15.7 / 2 pi which is a half of 31.4 / 2 pi