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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
11 Nov 2021

Given information

The dimensions of the rectangle of largest area that can be inscribed in an equilateral triangle of side L.

Step-by-step explanation

Step 1.

Let the upper base  of the rectangle be the segment of a line parallel to the base of the equilateral triangle at an unknown distance  from it. In such a way the triangle is divided in two triangles, the equilateral one having height   

And a smaller one having height   

 That are similar! so we can write the proportion   

 

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