A circle that originally had a circumference of 31.4 cm, now has a circumference of 15.7 cm. What happened to the radius?

Question

rogue · Answer

Do you see any relationships between the # 31.4 cm and 15.7 cm?

rogue · Answer

$$C_1 = 31.4 cm, C_2 = 15.7 cm$$$$\frac {C_1}{C_2} = 2$$

rogue · Answer

The radius of the original circle is twice the new one, so the radius was halved.

anonymous · Answer

Thank you :D

rogue · Answer

No problem :)

rogue · Answer

btw, who's that anime character that's your pic?

anonymous · Answer

:o someone drew it from http://www.deviantart.com/ I have a bunch of them

rogue · Answer

oh, deviant, I love the art there, they're always great quality :)

anonymous · Answer

Its not really a anime character, just the structure of anime they made themselfs an d it kinda looks like me so i thought why not xD & yes i love the art there :o

rogue · Answer

Well, then you must be cute, haha :P

anonymous · Answer

^-^ Thanks xD lol