ABCD is a square of side 10 cm. Four congruent isosceles triangles with sides equal to “x” are cut off from the four corners so that the remaining portion forms a regular polygon. Compute the area of the regular polygon thus formed.  a. 70.49 b. 82.84 c. 95.66 d. 78.13

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A: Explanation of the answer is as follows

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