How to find Chord from Arc Length and Sagitta

Question

I am trying to find the formulas to solve the entirety of a circle segment but all I have are the arc length and the sagitta. From this can I solve for Θ or chord length? EX: I have a arc length of 243.5 and a segment height of 7, what is the chord length? What is the Θ? What is the radius?

Answer 1

Exactly, what is the radius. The formula for the sagitta is

s = r - √(r² - l²), where l is the length of had the arc's chord.