Equilateral triangle ABC

In the equilateral triangle ABC, K is the center of the AB side, the L point lies on one-third of the BC side near the point C, and the point M lies in the one-third of the side of the AC side closer to the point A. Find what part of the ABC triangle contains the triangle KLM.

Correct result:

x =  0.2778


a=1 h=a2(a/2)2=12(1/2)20.866  S=a h2=1 0.86620.433  S1=h3 a22=0.8663 1220.0722 S2=2 h3 a22=2 0.8663 1220.1443 S3=h3 2 a32=0.8663 2 1320.0962  S4=S(S1+S2+S3)=0.433(0.0722+0.1443+0.0962)0.1203  x=S4S=0.12030.433=518=0.2778

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