Anyone here go to James Madison, can maybe be a life saver and help me out with geometry 2? :)

Question

aravindg · Answer

do you have a particular question? Perhaps we can help....

anonymous · Answer

I am waiting to see the problem as well..

anonymous · Answer

Lol. Find the area of a sector with a central angle of 170 and a diameter of 9.1 cm. Round to the nearest tenth. 

Options are 
A. 122.9 $$cm ^{2}$$
B. 30.7 $$cm ^{2}$$
C. 8.6 $$cm ^{2}$$
D. 3.4 $$cm ^{2}$$

aravindg · Answer

thats better :)

aravindg · Answer

do you know formula for area of sector ?

aravindg · Answer

@LyssaLauren ?

anonymous · Answer

Before you do ANYTHING, convert that degree measure to radians.

anonymous · Answer

well if that is case than would be this be a triangle that we are dealing with? I know this isn't trig

anonymous · Answer

@LyssaLauren

anonymous · Answer

Yes but we have a formula for a sector.

anonymous · Answer

dido525 do you the shape is triangle?

anonymous · Answer

We must have that angle in degrees for that formula to work,

aravindg · Answer

@Dido525  not necessary here 

AREA OF SECTOR=\large \dfrac{	heta}{360} \pi r^2\)

anonymous · Answer

No no, I know it's going to look like a slice of pizza lol.

aravindg · Answer

AREA OF SECTOR=$\large \dfrac{\theta}{360} \pi r^2$

anonymous · Answer

Te area of a sector of a circle is the product of the ratio measure of the arc
360  and the area of the circle. Right?

aravindg · Answer

theta is in degrees

anonymous · Answer

Ohh really? I didn;t know about that formula. Normally I just use A=A*r*Theta (in radians)

anonymous · Answer

But that formula makes perfect sence too.

anonymous · Answer

A=r*Theta(in radians) sorry. Typo.

anonymous · Answer

no prob man

aravindg · Answer

The A you are speaking of is arc length @Dido525

aravindg · Answer

we are finding area of sector here which is found by the formula I gave above

anonymous · Answer

Yeah. Stupid moment.

aravindg · Answer

@LyssaLauren  did you get the answer?

anonymous · Answer

Sorry about that.

aravindg · Answer

np ...evryone makes mistakes ..next time be a bit more alert ! :)

anonymous · Answer

It would be B, right?

anonymous · Answer

Dido525 where I come from that is called a brain fart lol

aravindg · Answer

wait a min pls

aravindg · Answer

yes you are right!!

aravindg · Answer

:)

anonymous · Answer

Thank you for your help! :]

aravindg · Answer

yw :)

anonymous · Answer

Nice job all..