Question

A circle has a radius of 3 cm. How does the circumference of the circle compare to the area?

Answer 1

Radius = 3 cm.

Now
Circumference = 2*pi*radius

Area = pi* radius^2

We have to show the ratio of the circumference to the area

Circumference : Area
= 2*pi*radius : pi*radius^2
= 2 : radius
= 2:3

Hope this helps

Answer 2

Circumference = 2πr
Area= πr^2
Circumference/ Area= 2πr/πr^2
=2/r
=2/3
so, circumference: area=2:3
or we can say that twice of circumference will be thrice of area