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britbrat4601
PLZ HELP a. Find the radius. If your answer is not an integer, express it in radical form. b. Find FN. If your answer is not an integer, express it in radical form. c. Find EF. Express it as a decimal rounded to the nearest tenth.
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a. Because OM is perp. to CM, and OD=OC = radius of circle, CM = DM = 22. Pythagoras in triangle OMC: OC² = 22² + 20² = 884. \[OC =r=\sqrt{884}=2\sqrt{221}\]
To find the other answers, use the same technique, in triangle ONE (you now know EO).