What is a straight line that goes through the center of a circle from side to opposite side?
a)
Diameter
b)
Circumference
c)
Radius
d)
Center
2.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
3.
A tire has a radius of 14 inches. What is its diameter?
a)
14 inches
b)
7 inches
c)
28 inches
4.
What is the length of the radius of the circle?
(a)
5.
The distance around a circle; much like the perimeter of a rectangle.
a)
perimeter
b)
diameter
c)
circumference
d)
radius
6.
What is pi?
Check ALL applicable answers!
a)
a delicious dessert
b)
the ratio between circumference and diameter
c)
a Greek symbol
d)
exactly 3.14
e)
approximately 3.14
7.
The radius of the circle is 9 meters. What is the circle's circumference?
(a)
8.
If a circle has a radius of 5 ft. then which formula below is correct for the area?
a)
π(5)
b)
π(10)
c)
π(5)(5)
d)
π(10)(10)
9.
Does this picture show the diameter or radius of a circle?
a)
Diameter
b)
Radius
10.
The radius is....
a)
a line that crosses through the center and touches each edge
b)
the center point of a circle
c)
a line from the center point to the edge of the circle
d)
an element in science
11.
A circle has a radius of 23 feet. What is the diameter of the circle?
a)
23 feet
b)
46 feet
c)
1/2 feet
d)
none of the above
12.
What does r represent in the formula:
A = π·r2
a)
circumference
b)
radius
c)
diameter
d)
squared
13.
What is the symbol for pi?
a)
#
b)
π
c)
&
d)
%
14.
The image represents pi.
True or False
a)
True
b)
False
15.
Determine the radius of the penny
a)
59.66 mm
b)
9.5 mm
c)
38 mm
d)
119.32 mm
16.
The ratio between a circle's circumference and (a) is (b)
เลือกจากคำด้านล่าง
diameter
π
radius
17.
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.
18.
What is the diameter?
a)
40 ft
b)
80 ft
c)
20 ft
19.
What is the circle's radius?
a)
6 ft
b)
12 ft
c)
24 ft
20.
The homeowners association wants to enclose the playground in a fence. How much fencing will they need to purchase? Is this question finding the area or the circumference?
a)
area
b)
circumference
c)
neither
21.
Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Use π = 3.14.
a)
4 in.
b)
8 in.
c)
12 in.
d)
16 in.
แป้นคำตอบ
Circles, Circles Review!!!
คำถามทั้งหมด: 21
1.
a)
Diameter
2.
a)
Diameter
3.
c)
28 inches
4.
7, 7 cm, 7cm
5.
c) circumference
6.
b)
the ratio between circumference and diameter
, c)
a Greek symbol
, e)
approximately 3.14
7.
56.52 meters, 56.52, 56.52 m
8.
c) π(5)(5)
9.
a)
Diameter
10.
c) a line from the center point to the edge of the circle
11.
b)
46 feet
12.
b)
radius
13.
b)
π
14.
a)
True
15.
b) 9.5 mm
16.
diameter,
π
17.
d) The distance from an edge of a circle to another edge through the center.