Name: _______________________
Circles – Mixed Problems
1
circle in terms of
.
Part B Find the area of the circle in
terms of
.
Part C Find the circumference of the
circle to the nearest tenth of a meter.
Part E Approximate the circumference
of the circle.
Part D Find the area of the circle to
the nearest tenth of a meter.
Part F Approximate the area of the
circle.
Use the circle to answer the questions that follow.
Part A Find the circumference of the
circle in terms of
.
Part B Find the area of the circle in
terms of
3
Sheet # 08-05
Use the circle to answer the questions that follow.
Part A Find the circumference of the
2
Date: _______
Class: Pre-Algebra
.
Part C Find the circumference of the
circle to the nearest tenth of a meter.
Part E Approximate the circumference
of the circle.
Part D Find the area of the circle to
the nearest tenth of a meter.
Part F Approximate the area of the
circle.
Isabella’s giant dog has run away! It’s time to call on a search party! You want to search in all
5
directions within 6 mile from her home. Rounded to the nearest hundredth of a square mile, what is the
area, in square miles, that your party will search?
Show your work.
Answer _________ square miles
4
5
If the radius of a circle is 12 cm, what is the
diameter?
A 6  cm
C 6 cm
B 24  cm
D 24 cm
If the diameter of a circle is 14 inches, what is
the radius?
A 7  in.
C 7 in.
B 28  in.
D 28 in.
The circumference of a circle is 158.45 yards.
10 What is the diameter of the circle rounded to
the nearest hundredth?
A
B
C
D
3.14 yds
25.22 yds
50.44 yds
100.87 yds
The circumference of a circle is 62.8
6
If the circumference of a circle is doubled,
how does the radius of the circle change?
A
B
C
D
7
length of the radius of the circle?
A
B
C
D
20 centimeters
10 centimeters
9 centimeters
19 centimeters
A circle has a circumference that measures
14 yards. What is the radius, in yards, of the
circle?
A
B
C
D
8
The radius does not change.
The radius becomes half as long.
The radius becomes four times as long.
The radius becomes twice as long.
11 centimeters. What is the best estimate for the
14
7
4
2
An above ground swimming pool is 18 feet in
diameter. How does the pool’s diameter d
compare to its circumference C?
A
B
C
D
1
C
2
d  2C
1
d C
3
d  3C
12 her circular garden. What is thearea, in the
Diana puts a brick border of 25
feet around
square feet, of the circle?
A 10  feet
B 12.5  feet
C 156.25  feet
D 625  feet
d
The circumference of a circle is 18 
13 centimeters. What is the area, in square
centimeters, of this circle?
9
Lucinda is trimming the edge of a circular
tablecloth. The tablecloth has a diameter of 7
feet. How much trim does Lucinda need, to
the nearest foot?
A
B
C
D
44 ft
22 ft
11 ft
6 ft
A
B
C
D
9  sq cm
36  sq cm
81  sq cm
324  sq cm
The area of a circular field of land is 64 square yards. How many yards of fence would you need to
14 enclose the plot of land? Express your answer in terms of  .
Show your work.
Answer _________ yards