Thank you guys fir the help

What is the approximate circumference of the circle shown below?

Solve this problem! extra ! 3025/5.5 = a/90.75

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3