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Mathematics 17 Online
OpenStudy (anonymous):

Find the area of the shaded portion in the equilateral triangle with sides 6. (assuming the central point of each arc is its corresponding vertex)

OpenStudy (anonymous):

OpenStudy (anonymous):

ok you need to do the following: 1) find the area of the triangle. notice that the triangle is equilateral thus we can use this:\[Area= \frac{ 1 }{ 2 }*\sin60* 6^{2}\] 2) find the area of the of the three equal sectors , and it equals one third of the area of circle it's radius=3 ,and it's given with the following formula:\[Area=\frac{ 1 }{ 3 }*\pi *3^{2}\] so now the area = \[9\sqrt{3}-3\pi\] that's what I think..

OpenStudy (anonymous):

I thought 3 had to be divide by something beacause that's what my answer has to be like this something sqr- something divide by something pi

OpenStudy (anonymous):

lol even I did not understand much, but I can tell you that devision has nothing to do with evaluating any non-regular areas in such questions like yours, always think about this :\[Area= Area1 -Area2\]

OpenStudy (anonymous):

my answer has to be it that format tho

OpenStudy (phi):

each sector has a central angle of 60º and radius of 3 the area of one sector is (60/360) * pi * 3^2= 9/6 pi or 3/2 pi there are 3 congruent sectors, with a total area of 9/2 pi

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