WorksheetsArea and Circumference of a Circle
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
What formula is this used for:
πr²
πr²
a)
Circumference
b)
Area
c)
Surface Area
d)
Volume
2.
What formula is this used for:
πd
πd
a)
Area
b)
Circumference
c)
Surface Area
d)
Volume
3.
Radius 6 cm
What is the diameter?
What is the diameter?
a)
36 cm
b)
12 cm
c)
6 cm
d)
3 cm
4.
Diameter 32 inches
What is the radius?
What is the radius?
a)
16 inches
b)
64 inches
c)
96 inches
96 inches
96 inches
d)
16 ft
5.
What formula is used to find the space
"inside" a flat object?
"inside" a flat object?
a)
Circumference
b)
Surface Area
c)
Area
d)
Volume
6.
What formula is used to find the distance around a circle?
a)
Area
b)
Surface area
c)
Circumference
d)
Volume
7.
Radius 5 in
Find the area of the circle.
Find the area of the circle.
a)
15.7 inches²
b)
31.4 inches²
c)
314 inches²
d)
78.5 inches²
8.
Diameter 14 inches
Find the area of a circle.
Find the area of a circle.
a)
615.44 in²
b)
153.86 in²
c)
43.96 in²
d)
87.92 in²
9.
Radius 4 inches
Find the circumference of the circle.
Find the circumference of the circle.
a)
25.12 in
b)
12.56 in
c)
50.24 in
d)
200.96 in
10.
Diameter 13.5 in
Find the circumference of the circle.
Find the circumference of the circle.
a)
84.79 in
b)
42.39 in
c)
21.195 in
d)
572.265 in
11.
A bicycle tire has a diameter of 20 inches. How many inches is one full revolution of the wheel?
a)
31.4 in
b)
1256 in
c)
125.6 in
d)
62.8 in
12.
A circle pool has a radius of 7.5 ft. Monica wants to know how many ft of a pool cover she needs to buy?
a)
23.55 ft²
b)
176.63 ft²
c)
47.1 ft²
d)
706.5 ft²
13.
Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 ft. How many feet of fencing does he need?
a)
37.68 ft
b)
18.84 ft
c)
113.04 ft
d)
452.16 ft
14.
Trevor is making a tablecloth for a circular table with a diameter of 40 inches. How many inches of tablecloth does he need?
a)
125.6 in²
b)
251.2 in²
c)
1256 ft²
d)
1256 in²
15.
Other than the formula C=πd what is another formula for circumference of a circle?
a)
C=2π
b)
C=2πr
c)
C=πr²
d)
C=πd²
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