Geometry Help?

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Calculate the area for each of the polygons below. If you do not know an equation to use, divide the polygon into other shapes to determine the area.

A regular heptagon with a side of 7 inches.
A 178.06 sq in
B 294.16 sq in
C 169.21 sq in
D 358.91 sq in
E 157.36 sq in
F 277.91 sq in

2007-10-18 05:07:43 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 answers

2007-10-18 05:15:50 · answer #1 · answered by kyle f 2 · 0⤊ 0⤋

The apothem is 3.5/tan(25.7143)= 7.2678
So area = (7.2678/2 ) *7^2= 178.06 sq in
A= apothem* perimeter/2

2007-10-18 05:17:58 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋