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WorksheetsHomework 3.2
Total questions: 45
Worksheet time: 3hrs 37mins
Given a circle with the radius of 8cm. Find the circumference of this circle. Use π as 3.14.
48.0cm
50.24cm
25.12cm
5.09cm
The definition of circumference is
distance from the center of any point on the circle
distance from one point to another
distance around the circle
distance from the center of any point on the circle
what is the definition of pi
select ALL that apply
it is the sixteenth letter in the greek alphabet
it has a represented value of 3.14
it has a represented value of 22/7.
Its something you eat...
what is the formula for finding diameter
r = 2 d
d = 2 r
a = m c2
c = π 2 r
what is the formula for finding radius
c = π d
c = 2 π r
d = r/2
r = d/2
Find the radius of the circle
20 ft
10 ft
5.5 ft
10
find the diameter of the circle
1 ft
4 ft
4 mm
2 ft
what is this shape called
circle
semi circle
moon
triangle
what is the formula for finding the area of a semi-circle
A = π r2
C = π r2
A = π r2 / 2
A = 2 π r
what is the formula for finding area of a circle
C = π r2
A = π r2
A = π r2 / 2
C = 2 π r
what is the radius of the inner circle?
12 in
8 in
8 ft
4 in
What is the formula for finding the circumference of a circle?
C = r2
C = rd
A = π·r2
C = π·d
What two formulas can you use to find the circumference?
C = π·d
C = π·r2
C = 2·π·r
C = d2
What does C represent in the formula:
C = π·d
Pi
Circumference
Diameter
Area
What does d represent in the formula:
C = π·d
diameter
radius
pi
3.14
What number represents π?
31.4
4.13
3.14
34.1
Find the circumference of the circle.
31.4 cm
78.5 cm
314 cm
15.7 cm
Find the circumference of the circle.
14.13 cm
63.56 cm
28.26 cm
127.17 cm
Find the circumference with a diameter of 18.4 km. Use 3.14 for pi.
23.7 km
57.8 km
19.3 km
59.1 km
Find the circumference with a radius of 5.8 cm. Use 3.14 for pi.
37 cm
38.3 cm
36.4 cm
42.7 cm
Find the circumference with a radius of 9 mi. Use 3.14 for pi.
59.1 mi
113 mi
26.6 mi
56.5 mi
What is the formula for finding the area of a circle?
A = π·d
C = 2·π·r
A = π·r2
C = π·d
What does A represent in the formula:
A = π·r2
Area
Radius
Pi
Diameter
What does r represent in the formula:
A = π·r2
circumference
radius
diameter
squared
Find the area of the circle.
18.84 m2
113.04 m2
37.68 m2
452.16 m2
Find the area of the circle.
176.6 cm2
706.5 cm2
23.6 cm2
50.24 cm2
Find the area of the circle.
9.42 cm2
7.07 cm2
28.26 cm2
4.71 cm2
