2-3-3
If the diameter of a circle is 32 inches, what is the radius? a.16" b.18" c.23" d.64"
A. 16"
A circle is a set of all points in a plane that are all the same distance from a common point called the ? . a.center b.middle c.tangent d.vertex
A. Center
The distance around a circle is called the ? . a.circumference b.girth c.perimeter d.span
A. Circumference
If the radius of a circle is nine centimeters, what is the diameter? a.4.5 cm b.18.0 cm c.30.6 cm d.81.0 cm
B. 18.0 cm
The length of any line segment that connects two points on the circle and passes through the center is called the ? . a.cord b.diameter c.radius d.sector
B. Diameter
The ratio of the circumference of a circle to the ? is represented by the Greek letter π. a.area b.diameter c.radius d.width
B. Diameter
Find the area of a circle that has a radius of seven inches. a.21.98 in2 b.43.96 in2 c.69.0 in2 d.153.86 in2
D. 153.86 in2
A full reel of cable has a diameter of 60 inches. A job requires 314 feet of cable. How many turns of cable should be taken off the reel? a.10 turns b.15.7 turns c.16.7 turns d.20 turns
D. 20 turns
The distance from the center of the circle to any point on the circle is called the ? . a.arc b.cord c.diameter d.radius
D. Radius
The diameter of a circle is always 3.14 times its circumference. Select one: True False
False
The radius of a circle is equal to twice its diameter. Select one: True False
False
In many calculations, 3.14 or 3 1/7 are typically used to approximate π. Select one: True False
True
The diameter of a circle is equal to twice its radius. Select one: True False
True
Which equation shows the correct relationship between the radius and the area of a circle? a.A = πr2 b.A = r2π c.r = A2π d.
a.A = πr2
If the radius of a circle is 2.5 meters, what is the circumference? a.7.85 m b.15.7 m c.19.63 m d.31.4 m
b.15.7 m
A 40-foot, class 2 pole has a minimum top circumference of 50 inches. What is its minimum diameter? a.7.96" b.15.92" c.62.8" d.157.0"
b.15.92"
What radius, in millimeters, is needed on a trundle wheel so that one rotation will measure a distance of one meter? a.157.0 mm b.159.2 mm c.636.9 mm d.1,570.0 mm
b.159.2 mm
If the circumference of a circle is 85 millimeters, what is the diameter? a.13.6 mm b.27.1 mm c.54.2 mm d.267 mm
b.27.1 mm
A trundle wheel, used to measure distances, has a radius of eight inches. How many feet has it traveled on the ground when it has made 300 revolutions? a.125.6' b.628' c.1,256' d.2,512'
c.1,256
A circle has a diameter of five inches and a circumference of 15.71 inches. What is the ratio of the circumference to the diameter? a.0.318 b.0.318" c.3.142 d.3.142"
c.3.142
Which equation shows the correct relationship between the radius and the diameter of a circle? a.r = 2d b.d = 1/2r c.d = 2r d.r = 2/d
c.d = 2r
The butt of a pole has a diameter of 50 inches. What is its circumference? a.15.70" b.15.92" c.78.5" d.157.0"
d.157.0
A circle has a diameter of 18 centimeters. What is the area of the circle? a.25.8 cm2 b.88.7 cm2 c.177.5 cm2 d.254.3 cm2
d.254.3 cm2
Which equation shows the correct relationship between the diameter and the circumference of a circle? a.d = π/C b.C = π/d c.C = d/π d.d = C/π
d.d = C/π
