Circle Formulas Vocabulary: Circumference Radius Diameter Pi.
Circles: Relating Radius, Diameter, and...
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Name: Date: Period: Circles: Relating Radius, Diameter, and Circumference-Notes Highlight the radius. If the radius is 4ÿ what is the diameter? Write an equation, in terms of radiusr to find the diameter. It takes two strings the length The following is a picture of of my radius to make the the 2 radii (radius plural) or diameter, the length of the diameter. Radius Approximate Circumference Radius = 3 Radius = Diameter Diameter= Diameter= 14 I took the diameter and wrapped it around my circle, about how many times? The extra is the value after the decimal: .14 ..... Write an equation using the diameter to find the circumference. Write an equation using the radius to find the circumference. What is the Circumference? Highlight the diameter. If the diameter is t 2, what is the radius? Write an equation in terms of diameter to find the radius.
Transcript of Circles: Relating Radius, Diameter, and...
Name: Date: Period:
Circles: Relating Radius, Diameter, and Circumference-Notes
Highlight the radius.If the radius is 4ÿ whatis the diameter?Write an equation, interms of radiusr to findthe diameter.
It takes two strings the length The following is a picture ofof my radius to make the the 2 radii (radius plural) ordiameter, the length of the diameter.
Radius ApproximateCircumference
Radius = 3
Radius =
Diameter
Diameter=
Diameter= 14
I took the diameter and
wrapped it around mycircle, about how manytimes?The extra is the value afterthe decimal: .14 .....
Write an equation using thediameter to find thecircumference.
Write an equation using theradius to find thecircumference.
What is theCircumference?
Highlight the diameter.If the diameter is t 2, what isthe radius?Write an equation in terms ofdiameter to find the radius.
Radius Diameter Approximate What is theCircumference Circumference?
Radius = Diameter= 8
Radius = 52
t b
Radius =
Radius = 5
Radius = Diameter= 30
Diameter=
Diameter= 42
Diameter=
/----.,t )
Circles: Relating Radius, Diameter, and Circumference-Homework
Use this circte to answer questions 1mid 2.
3ÿ What is the diameter oftheouter circle?
.
What is tile ':approximatecircumference of this circle7
A. 5 mm
B. 10 mm
C. 15 mm
D. 20 ran1
9
A. 2.5 mm
B. 5 mm
C. 7.5 mm
D. 9 mm
What is the radius of thiscircle?
A, 2fl
B. 3ft
C. 8ft
D. 5fi
What is the approximatemrcumferenc-' - - - " e of a circle wiffÿ a
diameter of 3 yards?
A. 6 yds
B. 8 yds
C. 7 yds
D. 9 yds
5. 7.
The radius of a circle is l 0inches. How does a diameter of
the circle compare to the
radius/
The PTA painted a giant cu'clcon flÿe playground. *i]ÿediameter of the circle was 28feet. What was the radius of thecircle?
aÿ The diameter is 2 timesthe radius.
B, The diameter is-1 the2
radius,
A. 56 tt
B, 7ft
C, I4ft
D. 2!1!
Dÿ The diameter is 3 timesthe radius.
o
The radius of a circle is 9centimeters. What is theapproximate measure of thecircle's circumference?
A. 18 cm
B. 54 cm
C. 14 em
D. 27 cm
radius.
C. qÿe diameter is 1 the3
.
The circumference of a lamp is 36 inches.
Which of the following could possibly bethe diameter of the lamp?
A. 12 inches
B. 24 inches
C. 36 inches
D. 48 inches
