Question #0f210

2 Answers

"1 cm"1 cm

Explanation:

We know

"circumference" = 2* pi* "radius"circumference=2πradius

OR

2*pi=2*pi*"radius"2π=2πradius

OR

"radius" = (2*pi)/(2*pi)radius=2π2π

OR

"radius = 1 cm"radius = 1 cm

Jun 23, 2017

"radius "=1radius =1

Explanation:

"the circumference (C ) of a circle "=2pirthe circumference (C ) of a circle =2πr
"where r is the radius"where r is the radius

rArrC=2pir=2piC=2πr=2π

"divide both sides by "2pidivide both sides by 2π

(cancel(2pi) r)/(cancel(2pi))=cancel(2pi)^1/cancel(2pi)^1

rArrr=1