What's the area?

7.4 in
61
10 in

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1