AnswersGeometryRelationships of Circles

Practice Test Answers

11 verified answers
4

The measure of central XYZ angle is 3 pi over 4 radians. What is the area of the shaded sector?

A
85 pi units squared
B
32 pi units squared
C
96 pi units squared
D
256 pi units squared
5

Which equation represents a circle that is concentric with the circle shown but has a radius that is twice as large?

A
open paren x minus 4 close paren squared plus open paren y minus 6 close paren squared is equal to 4
B
open paren x minus 4 close paren squared plus open paren y minus 6 close paren squared is equal to 16
C
open paren x minus 6 close paren squared plus open paren y minus 4 close paren squared is equal to 16
D
open paren x minus 6 close paren squared plus open paren y minus 4 close paren squared is equal to 4
7

What is the length of the diameter?

A
12 units
B
8 units
C
12 point 5 units
D
4 point 5 units
9

Which statements about the clock are accurate? Choose three correct answers.

A
The circumference of the clock is approximately 62 point 8 inches.
B
The central angle formed when one hand points at 1 and the other hand points at 3 is 30 degrees .
C
The length of the major arc between 3 and 10 is approximately 31 point 4 inches.
D
The minor arc measure when one hand points at 12 and the other hand points at 4 is 120 degrees .
E
The length of the minor arc between 6 and 7 is approximately 5 point 2 inches.
10

What are the measures of angles cap m and cap n ?

A
m angle cap m is equal to 113 degrees and m angle cap n is equal to 61 degrees
B
m angle cap m is equal to 61 degrees and m angle cap n is equal to 113 degrees
C
m angle cap m is equal to 119 degrees and m angle cap n is equal to 67 degrees
D
m angle cap m is equal to 67 degrees and m angle cap n is equal to 119 degrees
11

What is the measure of overarc BC ?

A
160 degrees
B
130 degrees
C
120 degrees
D
100 degrees
12

What is the approximate length of the radius, r ?

A
4 point 5 cm
B
28 point 3 cm
C
14 point 2 cm
D
9 point 0 cm

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