Find the area of the regular polygon with the given apothem a and side length s.
pentagon, a = 13.9 cm, s = 20.2 cm

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge