In a hexagon ABCDEF . Angle[AFE]=[FED]=[EDC]=[EDC]=[DCB]=[CBA]=[BAF]=120°. AB=CD=EF=3 and AF=ED=CB=6 find the area of this HEXAGON.
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angle [ABC]=[BCD]=120 degree and AB=CD so angle [BAD]=[CDA]=60 degree so BC||AD in same way FC||ED so quadrilateral ABCH is a Parrallelogram so CH=AB=CD=HD=3 CM and angle [HCD]=[HDC]=[DHC]=60 degree. so triangle (ABJ) congurrent to (CHD)and(FGE) and all are equilateral triangle. (√3*(3)^2)/4=(1/2)(3)(Height) height =(3√3)/2
so area of trapezium ABCD= 1/2(6+9) (3√3)2 (45 √3)/4=11.25√3 ----------------1
AREA OF parallelogram AJEF=6*(3√3)/2 =(18√3)/2---------------------2
TRIANGLE JED is a equilateral triangle of each side of 6 CM
area of Triangle(JED)= (√3(36))/4= --------3
SUM OF 1,2AND3=AREA OF HEXAGON = 50.66
Watch out! In the picture in the problem description, you have side B C = 3 , but the solution uses B C = 6 .
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I am sorry Mr. Caleb Townsend I will correct my mistake!!!! :-)
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when yaar???? next year???
that's absolutely right... in question figure B C = 3 and in answer figure Lalit Jena has used B C = 6 but some how he has arrived at the correct solution!!!... silly jena...
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I am sorry Sarthak rath!! I will correct it in some years!!!
why don't you type this in latex as i did in mine?
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What is latex?
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look at the difference between my problems solution and yours... LaTeX is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation.
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First, join F C to form trapezoids A B C F and C D E F . The area of a trapezoid is A = h × w , where h is the height and w is the length of the median, that is w = 2 1 ( b 1 + b 2 ) . Also, we aren't given the heights immediately, but we are given the angles in the trapezoids and slant lengths. So substitute h = l × sin θ , where l is the slant length.
The area of A B C F is A 1 = 6 sin ( 6 0 ∘ ) 2 3 + 9 = 1 8 3 The area of C D E F is A 2 = 3 sin ( 6 0 ∘ ) 2 6 + 9 = 4 5 4 3
So the area of hexagon A B C D E F is A = A 1 + A 2 = 1 1 7 4 3 ≈ 5 0 . 6 6