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WorksheetsCircumference & Area of Circles
Total questions: 23
Worksheet time: 2hrs 48mins
Name
Class
Date
1.
The radius of a circle 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
2.
The diameter of a circle is . . . .
a)
1/2 of the radius
b)
the radius squared
c)
radius divided by Pi
d)
twice the radius
3.
The distance around a circle is _____________?
a)
Area
b)
Circumference
c)
Diameter
d)
Radius
4.
What method would you use to find the circumference of a circle?
a)
Multiply the diameter by Pi.
b)
Divide the diameter by Pi.
c)
Multiply the radius by Pi
d)
Divide the radius by Pi.
5.
Which method could be used to find the radius of the circle formed by the pinwheel as it spins?
a)
Divide 9 inches by 2
b)
Divide 9 inches by pi
c)
multiply 9 inches by pi
d)
multiply 9 inches by 2
6.
What is π ? (Best Choice)
a)
The ratio of the circumference of any circle to its diameter.
b)
Exactly 3.14
c)
Exactly 3.1415
d)
Exactly 3.141593
7.
Determine the radius of the penny.
a)
59.66 mm
b)
9.5 mm
c)
38 mm
d)
119.32 mm
8.
Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?
a)
11.32 ft
b)
12.25 ft
c)
10.99 ft
d)
8.75 ft
9.
After taking part in a competition, Yahir received a bronze medal with a radius of 2.5 inches. What is the medal's diameter?
a)
2.5 in
b)
5 in
c)
4 in
d)
4.5 in
10.
A bicycle tire has a diameter of 27 inches. How far does the bike travel along the ground when the wheel rotates once?
a)
13.5 inches
b)
42.39 inches
c)
27 inches
d)
84.78 inches
11.
The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?
a)
56.25 ft
b)
393 ft.
c)
365 ft
d)
246 ft.
12.
A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?
a)
c = 15π
b)
C = 2π15
c)
c = 15 ÷ π
d)
c = 15 π2
13.
What is the formula for area of a circle given the radius?
a)
A = π x r
b)
A = 2 x π x r
c)
A = π x d
d)
A = π x r²
14.
The London Eye has a diameter of 120 meters. If you are sitting in one of the capsules, about how far do you travel in one rotation of the Ferris wheel?
a)
120 meters
b)
376.8 meters
c)
11,304 meters
d)
1884 meters
15.
Find the area of the circle
a)
56.52 in2
b)
1017.36 in2
c)
254.34 in2
d)
113.04 in2
16.
The circumference of a circle is 18.84 inches. What is the RADIUS of the circle? (Use 3.14 or Pi)
a)
3 inches
b)
6 inches
c)
59.16 inches
d)
169.56 inches
17.
The circumference of a circle is 15.7 feet. What is the AREA of the circle?
a)
2.5 feet2
b)
5 feet2
c)
78.5 feet2
d)
19.625 feet2
18.
The area of a circle is 28.26 cm2. What is the radius of the circle?
a)
9 cm
b)
3 cm
c)
27 cm
d)
Not Here
19.
A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?
a)
3 m
b)
9.42 m
c)
12 m
d)
18.84 m
20.
A circular window has a diameter of 24 inches. A piece of metal is to go around the window for a frame. How long does the metal need to be? (Best Choice)
a)
24π or about 75.36 in
b)
12π or about 37.68
c)
576π or about 1,808.64 in
d)
144π or about 452.16 in
21.
A center circle on a basketball court has a radius of 12 feet. How long is the line that wraps around the circle? (Best Choice)
a)
10.99ft
b)
21.98 ft
c)
75.36 ft.
d)
43.96 ft
22.
A center circle on a basketball court has a diameter of 12 feet. What is the area of the circle? (Best Choice)
a)
37.68 ft2
b)
18.84 ft2
c)
113.04 ft2
d)
452.16 ft2
23.
A horse is tethered to a peg at the center of the field. If the length of the rope is 18.3m what will be the maximum area the horse can graze? Rounded to the nearest hundredth.
a)
1051.56 m2
b)
1050.56 m2
c)
1052.56 m2
d)
1053.56 m2
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