Question

What is the exact area of a circle having a circumference of `3pi`?

Answer 1

I got `9/4pi`

Explanation:

You know that circumference is given as:
`C=2pir`
so you get for your circle:
`3pi=2pir`
rearranging:
`r=3/2`
So the area will be:
`A=pir^2=9/4pi`