i don't know what are the choices i am supposed to choose from but the two chords are equal, draw a line from o to d and from o to c these are radiuses so they are equal the 7.12 lines are equal and there is a right angle in both so you know that ED and BC are equal same apples to EF and AB
Answer:it’s is option 100 I did the test and got it right
Step-by-step explanation:
Expression given:

<em>Procedure</em>
As the problem is saying that <em>c = 3 </em>and <em>d = 9</em><em>,</em> we have to replace the values in the given expression:


Answer: