# Question #7a536

##### 1 Answer

if the circumference is

#### Explanation:

So I'm asuming you have a circle with a circumference of

If the angle that forms the sector is given in radians, then we can use the formula:

In this case,

We don't know the radius, therefore we must find it first.

The circumference of a circle is given by:

Therefore:

Now we can calculate the area of the sector:

... Or maybe, you meant the are of the whole circle is

The solution is found in a similar way, only we will have to define two areas. The area for the whole circle and the area of the sector:

Aw is the area of the Whole circle.

Isolate "r".

Now calculate the area of the sector in the same way we did before:

This answer looks much better, which is why I think this is more correct.

Sorry for the inconvienience