Question

The circles area is 2 1/2 times its circumference. What is the radius for this to be correct?

Answer 1

area of circle= 2 1/2 circumference

of circle

π r^2 =3/2 (2π r)

π r^2 =3π r

π r•r=3 π r

r= 3π r/ π r

r= 3 units