Circumference
Presentation
•
Mathematics
•
10th Grade
•
Practice Problem
•
Medium
Standards-aligned
Nisi Haley
Used 7+ times
FREE Resource
9 Slides • 6 Questions
1
Circumference
What is "circumference"?
2
What is PERIMETER and how is it found?
PERIMETER is the distance around an object.
Perimeter is found by adding all of the sides of a figure together.
Distance is measured in many different types of units.
3
Multiple Choice
Which of the following units does NOT measure DISTANCE?
feet
inches
degrees
yards
4
What is CIRCUMFERENCE and how is it found?
CIRCUMFERENCE is the perimeter of (distance around) a circle.
Since circles don't have "sides", a different method must be used to find the distance around a circle.
5
CIRCUMFERENCE can by found two ways
6
7
When do you use the circumference formula and which one do you use?
8
Multiple Choice
What is the circumference of a circle whose radius is 4 inches?
C = 4 inches
C = 8 π
C = 4 π
C = 2 π
9
Multiple Choice
What is the circumference of a circle whose diameter is 10 feet?
C = 10 feet
C = 10π feet
C = 5π feet
C = 20π feet
10
Multiple Choice
If a circle's circumference is 14π yards, what is the radius?
r = 14 yards
r = 7 degrees
r = 28 yards
r = 7 yards
11
Multiple Choice
If a circle's circumference is 24π miles, then what is the diameter?
d = 12 miles
d = 24 miles
d = 12 degrees
d = 24 degrees
12
What is ARCLENGTH?
ARCLENGTH is the LENGTH of an ARC.
Arclength, like circumference, is a distance.
Distance is measured in units like centimeters, meters, yards, feet, miles.....NOT degrees.
DEGREES IS NOT A MEASUREMENT OF DISTANCE!!!
13
What is the formula for finding the length of an arc?
14
Multiple Choice
What is the length of an arc that measures 180° if the radius is 6 meters?
arclength = 180°
arclength = 6 meters
arclength = 6π meters
arclength = 12π meters
15
When is the formula for arc length used?
The formula for arc length is used when finding an arc's length (of course) as well as when an arc's length is GIVEN (and a radius, diameter or circumference is needing to be found).
Circumference
What is "circumference"?
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