1.
Find the circumference. Round the answer to the nearest tenth.
A.
25.1 in.
B.
28.3 in.
C.
282.6 in.
D.
14.1 in.
Hint
2.
Classify the angle whose measure is 100°.
A.
straight
B.
right
C.
obtuse
D.
acute
Hint
3.
The sum of the measures of the angles of a regular octagon is 1,080°. Find the measure of one of its angles.
A.
135°
B.
90°
C.
120°
D.
108°
Hint
4.
Evaluate 21
2
.
A.
422
B.
441
C.
421
D.
442
Hint
5.
Which is
not
a perfect square?
A.
144
B.
169
C.
48
D.
100
Hint
6.
Which formula represents the Pythagorean Theorem?
A.
a
+
b
=
c
B.
c
2
=
a
2
+
b
2
C.
c
2
=
a
2
-
b
2
D.
a
2
=
b
2
+
b
2
Hint
7.
Find the area of the circle. Round the answer to the nearest tenth. Use
A.
118.3 square centimeters
B.
113.0 square centimeters
C.
452.2 square centimeters
D.
37.7 square centimeters
Hint
8.
Find the area of a circular swimming pool cover if the radius of the cover is 7.5 feet. Use
and round the answer to the nearest square foot.
A.
44 ft
2
B.
47 ft
2
C.
148 ft
2
D.
177 ft
2
Hint
9.
How can you find the distance around a circle?
A.
all answers are correct
B.
evaluate the formula for the circumference
C.
draw a polygon that closely matches the circle, then measure the sides of the new polygon
D.
use string to measure around a circle, then measure the string
Hint
10.
Find the exact area of the triangle on a 1 centimeter grid.
A.
9 cm
2
B.
15 cm
2
C.
10 cm
2
D.
9.5 cm
2
Hint