# A sector in a pie graph is 12 cm^2, radius is 4cm, what is the angle?

##### 1 Answer

Jul 12, 2015

#### Explanation:

Radius of Circle = 4cm

*Recall : Area of disk = *

Here, the area of our graph =

Then our sector of

And

Therefore, the

(It represents approximately

Now we want the angle of the sector (in radian measure)

If the sector cover

Thus :

**The angle measure of the sector is equal to #1.5# rad.**