if radius OC is perpendicular to chord AB at D, AB = 20cm and OB = 16 cm, find CD.
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Answer:
.
Step-by-step explanation:
The perpendicular from the center bisects the chord into two 10-cm line segments.
Refer to one of the right triangles in the diagram.
r² = (16² + 10²) cm²
r² = 356 cm²
r = √356 cm
Radius, r = 2√89 cm
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