sorry it's kind of awkwardly written, for some reason it won't let me copy paste the question into the box.
The measure of what ???
What is the measure of
that's strange, I don't know why it's not showing up.
What is the measure of angle A, the central angle?
BC is a chord on the circle which has the same measure as the radial segments, AB and AC....thus ABC is equilateral with sides = 7
The measure of each angle = 60° ...so angle A = 60°