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Mathematics 13 Online
OpenStudy (anonymous):

HELP ME PLEASE! http://usatestprep.com/modules/gallery/files/73/7334/7334.png Find the area of the green sector if ∠ A = 45° and the circle has a radius of 10 inches. A) 25π B) 5π/4 C) 5π/2 D) 25π/2

OpenStudy (anonymous):

@jim_thompson5910 @Data_LG2 @misty1212 @satellite73

OpenStudy (anonymous):

@Austin6i6

OpenStudy (anonymous):

help me please..

OpenStudy (anonymous):

first, what is 45degrees in radians?

OpenStudy (anonymous):

um idrk is there like a formula like radian/180??

OpenStudy (anonymous):

yep, 45 x pi/180

OpenStudy (anonymous):

essentially, what is 45/180?

OpenStudy (anonymous):

.25

OpenStudy (anonymous):

ya, or 1/4

OpenStudy (anonymous):

don't forget pi is still in the numerator so we have pi/4

OpenStudy (anonymous):

So the formula to find the area is \[(\theta/2)r ^{2}\]

OpenStudy (anonymous):

oh ok thanks i just got it in my calculator

OpenStudy (anonymous):

wait

OpenStudy (anonymous):

what's the theta going to be? 360?

OpenStudy (anonymous):

theta is pi/4

OpenStudy (anonymous):

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