مساحة المثلث

 

(11-6)/(2-6)=6/(6-p)

p=54/5

length=√((2-54/5)²+11²)

Area=(4961√3)/100

=85.9270

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tan(Q)=6/x

 ,tan(Q)=5/4 x=(24/5)units

 L^2=(11)^2+(4+24/5)^2 

L^2=(11)^2*(41/25)

 S=L^2*(√3)/4=85.927units^2