Question

Given O below, If AB and BC are congruent, what is the measure of chord BC?

Answer 1

we know that

AB and BC are congruent

That means

$AB=BC$ ----> equation A

we have

$AB=12.5\ units$

substitute in equation A

$BC=12.5\ units$

therefore

the answer is the option B

$12.5\ units$

Answer 2

Since, AB and BC are the same length, the measure of the chord for BC would be 12.5 units