Circles

Circles

By Aileen Sabado

Multiple Choice

CN: 35

The definition of a circle is

• set of all points in a plain that are the same distance from a point called the center

• the distance around a share

• a large figure

• a pizza, orange, plum, or watermelon

Multiple Choice

CN: 34

The definition of radius is

• distance from one point to another point

• distance around the circle

• distance from the center to any point on the circle

• distance across the circle through the center

Multiple Choice

CN: 33

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Multiple Choice

CN: 32

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Multiple Choice

CN: 31

A circle has a radius of 23 feet. What is the diameter of the circle?

• 23 feet

• 46 feet

• 1/2 feet

• none of the above

Multiple Choice

CN: 30

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

Multiple Choice

CN: 29

What number does π represent?

• 4.13

• 3.41

• pie

• 3.14

Multiple Choice

CN: 28

What is the symbol for pi?

• #

• π

• &

• %

Multiple Choice

CN: 27

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m 
• 9.42 m
• 12 m
• 18.84 m

Multiple Choice

CN: 26

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Multiple Choice

CN: 25

What is the area of this circle?

• 452.39
• 139.12
• 113.1
• 84.23

Multiple Choice

CN: 24

The definition of diameter is

• distance from the center of any point on the circle

• distance across the circle through the center

• distance from one point to another

• distance around the circle

Multiple Choice

CN: 23

The space contained inside of a circle is called the...

• radius

• diameter

• circumference

• area

Multiple Choice

CN: 22

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

Multiple Select

CN: 21

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...

Multiple Choice

CN: 20

What is the formula for finding diameter?

• r = 2 d

• d = 2 r

• a = m c²

• c = π 2 r

Multiple Choice

CN: 19

What is the formula for finding radius?

• c = π d

• c = 2 π r

• d = r/2

• r = d/2

Multiple Select

CN: 18

what is the formula for finding circumference

select ALL that apply

• c = π d

• c = 2 π r

• d = 2 r

• r = d/2

Multiple Choice

CN: 17

which segment above represents the diameter

• BC

• AC

• BD

• LM

Multiple Choice

CN: 16

which segment above represents the radius

• AC

• AB

• LM

Multiple Choice

CN: 15

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

Multiple Choice

CN: 14

find the diameter of the circle

• 14 m

• 7 m

• 14

• 3.5 m

Multiple Choice

CN: 13

find the radius of the circle

• 3 m

• 1.5 m

• 1.5

• 1.5 mm

Multiple Choice

CN: 12

find the diameter of the circle

• 1 ft

• 4 ft

• 4 mm

• 2 ft

Multiple Choice

CN: 11

what is this shape called

• circle

• semi circle

• moon

• triangle

Multiple Choice

CN: 10

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

Multiple Choice

CN: 9

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

Multiple Choice

CN: 8

what is the radius of the inner circle?

• 12 in

• 8 in

• 8 ft

• 4 in

Multiple Choice

CN: 7

what is the diameter of the inner circle

• 16 in

• 12 in

• 4 in

• 8 ft

Multiple Choice

CN: 6

Find the circumference of a circle with a radius of 4m.

• 25.12 m

• 12.56 m

• 200.96 m

• 50.24 m

Multiple Choice

CN: 5

A circle has a diameter of 6ft. What is the circumference of the circle?

• 18.84 ft

• 113.04 ft

• 36 ft

• None of the above

Multiple Choice

CN: 4

What is the area of a circle with the diameter of 10cm ?

• 66cm
• 78.5cm
• 66.5cm
• 10m

Multiple Choice

CN: 3

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.04

Multiple Choice

CN: 2

What is the area of this circle?

• 201.06
• 50.24
• 123.12
• 94.43

Multiple Choice

CN: 1

The diagram below shows the radius of the circular opening of a bowl. What is the approximate circumference of the opening in centimeters?

• 29.83

• 9.5

• 59.66