Calculate the area of the shaded sector.

Question

anonymous · Answer

|dw:1345249082953:dw|

anonymous · Answer

the triangle with the 25 in it is shaded

shane_b · Answer

So the interior angle of that slice is 25 degrees?

anonymous · Answer

no thats the radius

shane_b · Answer

That wouldn't make sense...since the diameter is 12.5 the radius would be 6.25.

anonymous · Answer

well yes its the interior angle of the slice

shane_b · Answer

Ok...the formula to find the area of the shaded slice would be:$$A=\frac{25}{360}\pi r^2$$

shane_b · Answer

If you're stuck with the above all you need to do is plug in 12.5/2=6.25 for r and do the calculation to get A.

anonymous · Answer

just a thought here use sin

shane_b · Answer

@godorovg: Can you elaborate?

anonymous · Answer

A.	5.5
	B.	1.09
	C.	4.26
	D.	8.5

shane_b · Answer

@Tblack: The answer is in the list....what did you get when you calculated it?

anonymous · Answer

shaneB which is the shaded area? as the drawing looks I thought you were dealing the triangle. If I made a mistake I am deeply sorry here

shane_b · Answer

I believe the shaded area is the entire pie slice

anonymous · Answer

im like so Lost :(

shane_b · Answer

Ok.  Let's back up a step.  Do you know the formula for the area of a circle?

anonymous · Answer

so my question is that if the shaded area includes the triangle or not?

anonymous · Answer

yes godorovg

shane_b · Answer

|dw:1345250526309:dw|Right?