# The rectangle 5

The rectangle OABC has one vertex at O, the center of a circle, and a second vertex A is 2 cm from the edge of the circle, as shown. The vertex A is also a distance of 7 cm from C. The point B and C lie on the circumference of the circle.

a. What is the radius?

b. Find the length of AB.

a. What is the radius?

b. Find the length of AB.

### Correct answer:

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