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Math Course 2 Geometry
POW #26 — Circles
Name:_________________________
Due
May 17/18, 2010
Date:____________ Period:_______
1.] In the figure, ABCD is a square and AC =
22. Find the circumference of the circle to the
nearest tenth.
2.] In circle A, PQR is an isosceles triangle.
Measure of RQP is 64°, find the measure of
minor arc RQ.
3.] Find the measure of angle x.
4.] If NR is a diameter of the circle, MR = 12,
RMN is a right angle, and the circle has radius
10, then find the measure of major arc NRM.
B
560
0
32
A
x
0
C
5.] Find the exact circumference of the circle in
the figure.
6.] BA is a diameter. Find the following
measures:
B
mACD= _____
m ABD = _____
C
0
m BC = _____
15 in
m CAB = _____
280
A
7.] Find the value of y.
D
8.] Find the value of x and y in the figure below.
10.]
11.]
12.] In 1996, mountain biking became a new event in Summer Olympics. Before Olympics,
inspectors check the accuracy of the mountain biking event course by using the “calibrated
bicycle method”. The inspectors ride a bicycle equipped with counters that track the rotations
of the wheels. If the radius of the bicycle wheel is 1 foot and the counter shows 20,300
revolutions at the end of a course, in miles, how long is the course? (5280 ft = 1 mile)