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

Etrujillo

New member
Dec 12, 2018
9
20181204_093323-2.jpg

So far i have 270/360× (pi)r^ i dont know what to do next please help.
 
Last edited by a moderator:

MarkFL

Administrator
Staff member
Feb 24, 2012
13,735
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
Dec 12, 2018
9
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
Jan 30, 2018
368
Yes, [tex]108\pi[/tex] is correct.