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)
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..
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
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 :\[Area= Area1 -Area2\]
my answer has to be it that format tho
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
Join our real-time social learning platform and learn together with your friends!