<PRE><B>Question 731530</B>
We do have a pentagon figure with the size equals 25 units.

How to find the area of the figure?
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You can divide it into 5 isoceles triangles, then into 10 right triangles.
The small angle of the right triangles = 360/10 = 36 degs
The short side = 25/2 = 12.5
Use trig to find the 2nd side (the apothem).
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Use the formula
{{{Area = ns^2*cot(180/n)/4}}}, n = # of sides, s = side length
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