Vocabulary
Circumference
Area and Circumference
Area
Parts of a circle
Surface Area
Volume
100
A straight line from the center to the circumference of a circle or sphere
Radius
100
What is the circumference of a circle if:
the radius = 7 yds?
43.96yds
When I need a circumference Ill just use pi d.
radius = 7
7 * 2 = 14
14 is diameter
14 * pi is 14 pi or 43.96
100
What is the formula to find the area of a circle?
A=
pir^2
100
What is the area of a circle if:
the Radius = 6 in
113.04 in2
6 * 6 * 3.14
36 pi or 113.04
100
What is the diameter of a circle whose circumference is 314?
100
314 / 3.14
100
Rectangular prism bases 10.5 and 8 with height 12
1008
100
What is the formula for finding volume of a cylinder?
V = pi * r2 * h
200
Name the line in a circle that cuts it in half.
Diameter
A diameter goes across the circle passing through the middle.
200
What is the circumference of a circle if:
the radius = 9 yds?
56.52yds
radius = 9
9 * 2 = 18 which is the diameter
18 * pi is circumference or 18 * 3.14
18pi or 56.52
200
What is the decimal approximation we use for pi?
3.14
200
What is the area of a circle if:
the Radius = 3 ft
28.26 ft2
3 * 3 * 3.14
200
What part of a circle is needed to find the AREA?
Radius
200
Find the surface area of
48 km².
200
What is the radius and what is the height of the cylinder? Find the volume.
radius = 3 in
height = 10 in
V = 282.6
300
The outside measurement of a circle. Or the distance around the outside of the circle
Circumference
Circumference is the perimeter of a circle.
300
The radius of a circle is 7 m. Find its circumference in terms of π.
14π
300
Find the area of a circle when the circumference is 28.26 feet.
63.59 ft2
28.26 / 3.14 = 9 This is the diameter
9/2 = 4.5 this is the radius
4.5 * 4.5 * 3.14 = 63.585
300
The diameter of a circle is 6 ft.
Find its area in terms of π.
9π ft2
6/2 = 3
3 * 3 * π= 9π
300
What is the radius of a circle whose circumference is 901?
14.49
901 / 3.14 =28.98
28.98 / 2 = 14.49
300
Area of the base of this prism?
120 m^2
300
Find the volume of this can of coke whose diameter is 7 centimeters and height is 13 centimeters. Round to the tenths.
500 cm3 OR 500.0 cm3
400
The measurement of the inside of a circle. Or how much the circle covers
Area
400
The circumference of a circle is 2π m. Find its diameter, in meters.
2 meters
400
A Ferris wheel has a diameter of 80 meters. How many meters does a rider travel in THREE complete rotations around the Ferris wheel? Round to the nearest tenth
753.6 meters
80 /3.14 = 251.2 Circumfence (1 rotation)
251.2 * 3 = 753.6
400
The circumference of a circle is 8π cm.
What is the area, in square centimeters? Express your answer in terms of π.
16π cm2
8/2 = 4
4 * 4 * π
400
What is circumference?
A. The distance around a circle.
B. The space inside the circle.
C. line from side to side passing through the center.
D. line from the center to the side.
A. The distance around a circle.
400
Perimeter of the base of this prism?
24 yards
400
Find the volume of a cylinder whose radius is 8mm and height is 60mm.
12,057.6 mm3
500
Circumference divided by diameter.
Pi - 3.14
500
The circular fountain in front of the courthouse has a radius of 9.4 feet. What is the circumference of the fountain to the nearest foot?
59
9.4 * 2 = 18.8
18.8 * 3.14 = 59.032
Which rounds to 59.
500
A rose garden is circular. How much space does the rose garden take up if the diameter of the garden is 18 feet? (use 3.14 for pi)
254.34 ft2
18 /2 = 9 this is the radius
9 * 9 * 3.14
254.34
500
A dog is leashed to a point in the center of a large yard, so the area the dog is able to explore is circular. The leash is 20 feet long. What is the area of the region the dog can explore?
1256
r = 20
20 * 20 * 3.14
500
What is the radius of a circle with a circumference of 368.636
58.7
500
Lateral surface area of this prism?
36in2
500
A silo shaped like a cylinder with a diameter of 4 and a height of 9 meters is used to store grain. How much grain, in cubic meters, is stored in the silo if it is three-fourths full?
84.78 cubic centimeters