Help me and get brainiest

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons