# Find the area of sector in a circle in terms of pi. (Geometry)

#### Etrujillo

##### New member

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#### MarkFL

Staff member
I would first reduce:

$$\displaystyle \frac{270^{\circ}}{360^{\circ}}=\frac{3}{4}$$

And so we now have the area $$A$$:

$$\displaystyle A=\frac{3}{4}\pi r^2$$

Can you identify the radius $$r$$ of the circle from the diagram?

#### Etrujillo

##### New member
The radius i believe is 12m so when i plug in your formula i get 108pi as the answer. Am i correct?

#### Country Boy

##### Well-known member
MHB Math Helper
Yes, $$108\pi$$ is correct.