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
Related questions
Question
Which statement correctly gives the unknown arc length and the justification for the measurement?
Transcribed Image Text:18 cm
42 cm
13 cm/
to
?
Transcribed Image Text:A. The unknown arc length is 37 cm. Because the radius is 5 units shorter in length, the arc must be 5 units shorter in length.
B.
The unknown arc length is 30.33 cm. Because all circles are similar, the length of the arc intercepted by an angle is proportional
to the radius.
OC. The unknown arc length is 42 cm. Because all circles are congruent, congruent angles must intercept congruent arcs.
O D.
The unknown arc length is 58.15 cm. Because arc lengths are inversely proportional to radius lengths, the smaller circle must
have a longer arc.
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