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The center of a circle of radius 3 inches is at a distance of 20 inches from the center of a circle of radius 9 inches. What is the exact length of common internal tangent AB? (HINT: Use similar triangles to find OD and DP. Then apply the Pythagorean Theorem twice.) B

The center of a circle of radius 3 inches is at a distance of 20 inches from the center of a circle of radius 9 inches. What is the exact length of common internal tangent AB? (HINT: Use similar triangles to find OD and DP. Then apply the Pythagorean Theorem twice.) B

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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The center of a circle of radius 3 inches is at a distance of 20 inches from the center of a circle of radius 9 inches. What is the exact length of common internal tangent AB? (HINT: Use similar triangles to find OD and DP. Then apply the Pythagorean Theorem twice.) B
Transcribed Image Text:The center of a circle of radius 3 inches is at a distance of 20 inches from the center of a circle of radius 9 inches. What is the exact length of common internal tangent AB? (HINT: Use similar triangles to find OD and DP. Then apply the Pythagorean Theorem twice.) B
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