Question

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

Answer 1

@jim_thompson5910 @Data_LG2 @misty1212 @satellite73

Answer 2

@Austin6i6

Answer 3

help me please..

Answer 4

first, what is 45degrees in radians?

Answer 5

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

Answer 6

yep, 45 x pi/180

Answer 7

essentially, what is 45/180?

Answer 8

.25

Answer 9

ya, or 1/4

Answer 10

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

Answer 11

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

Answer 12

oh ok thanks i just got it in my calculator

Answer 13

wait

Answer 14

what's the theta going to be? 360?

Answer 15

theta is pi/4