WorksheetsRadius, Diameter, Circumference and Area of a Circle
Total questions: 18
Worksheet time: 25mins
Name
Class
Date
1.
The radius of a circle is
a)
The measurement from the center of a circle to an edge of the circle.
b)
The measurement around the circle
c)
The measurement from and edge of the circle to another edge through the center
d)
A line perpendicular to the diameter of the circle
2.
The diameter of a circle is:
a)
The measurement around the circle.
b)
The distance from an edge of a circle to another edge.
c)
The distance from the center of the circle to an edge of a circle
d)
The distance from an edge of a circle to another edge through the center.
3.
What is the diameter?
a)
8
b)
16
c)
10
d)
4
4.
What is the radius?
a)
18
b)
72
c)
38
d)
14
5.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
6.
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
7.
What number is pi?
a)
1.41
b)
2.00
c)
3.14
d)
5.14
8.
What two formulas can you use to find the circumference?
a)
C = π·d
b)
C = π·r2
c)
C = 2·π·r
d)
C = d2
9.
To find the circumference of a circle, you must multiply the ________________ by 3.14.
a)
circumference
b)
area
c)
radius
d)
diameter
10.
To go from radius to diameter I need to do what?
a)
divide by 2
b)
multiply by 2
c)
multiply by 3.14
d)
divide by 3.14
11.
This circle has a diameter of 4.3 m. Calculate the circumference of this circle in meters. Use 3.14 for pi when calculating.
4 lines
12.
What is the diameter?
a)
8
b)
16
c)
10
d)
4
13.
If my radius is 10ft, what is my diameter?
a)
20ft
b)
5ft
c)
31.4ft
d)
62.8ft
14.
What is the radius of a circle when the diameter is 70 m?
a)
38
b)
35
c)
90
d)
140
15.
How do you find the area of a circle?
a)
πd2
b)
πr2
c)
2πr
d)
2π2
16.
Find the area of the circle
a)
43.96
b)
153.86
c)
87.82
d)
307.72
17.
Find the area of the circle
a)
56.52
b)
254.34
c)
1017.36
d)
113.04
18.
A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?
a)
31.25 m2
b)
29.55 m2
c)
30.36 m2
d)
50.27 m2
100 %
