Question

Calculate the area of the regular pentagon below:

A regular pentagon with side length of 22.3 inches and dotted line from center to middle of side of 15.4 inches. which out of the four is correct?

686.84 square inches
732.34 square inches
858.55 square inches
1717.1 square inches

Answer 1

The answer to this question is 858.55.

Answer 2

Area of triangle=(22.3*15.4)/2
we have 5 equal triangles , so 5*(22.3*15.4)/2=858.55