WorksheetsBasic Circle - Radius, Diameter, Circumference, Area
Total questions: 13
Worksheet time: 24mins
Name
Class
Date
1.
What does "circumference" mean?
a)
Space a circle takes up
b)
Distance around a circle
c)
Line from one side of a circle to another
d)
Line from center of circle to side
2.
What is the area of a circle?
a)
The distance around a circle.
b)
The space inside the circle.
c)
A line from side to side passing through the center.
d)
A line from the center to the side.
3.
What is the diameter?
a)
8
b)
16
c)
10
d)
4
4.
What is the formula for finding the circumference of a circle?
a)
C = r2
b)
C = rd
c)
A = π·r2
d)
C = π·d
5.
What does C represent in the formula:
C = π·d
a)
Pi
b)
Circumference
c)
Diameter
d)
Area
6.
What number represents π?
a)
31.4
b)
4.13
c)
3.14
d)
34.1
7.
If the diameter of a circle is 50 yards, the radius is _____
a)
100 yards
b)
25 yards
c)
150 yards
d)
15 yards
8.
If the radius of a circle is 12.5 meters, the diameter is ____
a)
6.25 meters
b)
125 meters
c)
25 meters
d)
50 meters
9.
Meg swam from one side of her circular pool to the other side going through the center. If Meg swam 8 feet, what is the approximate circumference of Meg's pool?
a)
16 feet
b)
25.12 feet
c)
251.2 feet
d)
4 feet
10.
Find the circumference of the circle.
a)
31.4 cm
b)
78.5 cm
c)
314 cm
d)
15.7 cm
11.
find the area of the circle below.
a)
100 cm
b)
225 cm
c)
9 cm
d)
28.26 cm
12.
What is the area of this circle?
a)
1385
b)
2142
c)
5541
d)
1289
13.
A remodeling project calls for sanding
a chair with a disk sander. The sanding
disk used on the sander has a radius of
4.5 inches. Find the area of the disk.
Use 3.14 for π
a)
about 64.79 in2
b)
about 55.19 in2
c)
about 63.59 in2
d)
about 53.79 in2
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