If the circumference of a circle is half the area, what is the radius of the circle?

1 Answer
Gaya3 · Alan P.
Sep 30, 2017

#4# #"units"#

Explanation:

Area of Circle #= 2pir#
Circumference of Circle #=pir^2#

By the question,
#2pir=(pir^2)/2#

Now, Cross-Multiplying...
#=2*2*cancel(pi*r)=cancel(pi*r)*r#
#=>r=2*2#
#=>r=color(blue)4# #"units"#

Related questions
Impact of this question
3085 views around the world
You can reuse this answer
Creative Commons License