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Day 6 Circumference.notebook
1
April 15, 2013
Do NowAIM: Circumference of a Circle
A computer technician from Tech Aids is helping you setup your new home computer. The technician needs to download and setup three pieces of software. The size of the software files are 90.5 MB (megabytes), 271.5 MB, and 447 MB.
The download time of the first piece of software is shown below:
If the rate of download is the same for the other two pieces of software, approximately how much time will it take the technician to download all three pieces of software?
A 7 minutesB 9 minutesC 11 minutesD 24 miuntes
Day 6 Circumference.notebook
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Bring 2 Sharpened Pencils Friday
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Anticipatory Set: Fill the What I Know and What I Want to Learn sections of the following KWL Chart based on your knowledge of finding the circumference of a circle.
What I Know What I Want to Learn What I Learned
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Circumference of a Circle Formulas
QUESTION: What is the relationship between the radius and diameter of a circle?
1.) C = πd
2.) C = 2πr
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Find the circumference of the following circle. Use the Pi Button and round your final answers to the nearest hundredth.
7 yd
1
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Find the circumference of the following circle. Use the Pi Button and round your final answers to the nearest hundredth.
13 cm
2
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Radius = 153 m
3
A 153
B 306
C 76.5
D 151
mmmm
Find the circumference and leave the answer in Pi notation.
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Diameter = 2053 m
Find the circumference and leave the answer in Pi notation.
4
A 2053
B 1026.5
C 4106
D 513.25
mm
mm
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QUESTION: Determine a method to find the radius or diameter if you are given the circumference. Explain your method.
Example: The circumference is 56 inches, what is the radius?
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If the circumference of a circle is 56 inches, find the length of the radius and the diameter. Use the Pi Button and round your final answers to the nearest tenth.
Radius = _____
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The circumference of the Superdome in New Orleans is 2135.2 feet. Find the length of the radius and the diameter of the Superdome. Use the Pi Button and round your final answers to the nearest tenth.
Diameter = ______
6
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The circumference of a circle is 30π inches. Find the radius and diameter.
Radius = _____
7
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BEFORE YOU LEAVE
Go back to the KWL Chart in the Anticipatory Set and fill in the What I Learned section.
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Homework: On Core Page 114 #1-3, 5-9 (Use Pi Button)
Mr. Tjersland's Math 7
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Circumference of a Circle Formulas1.) C = πd2.) C = 2πr
AIM: Circumference of a Circle
Find the circumference of the following circle. Use the Pi Button and round your final answers to the nearest hundredth.
13 cm
Day 6 Circumference.notebook
16
April 15, 2013
AIM: Circumference of a Circle
Circumference of a Circle Formulas1.) C = πd2.) C = 2πr
If the circumference of a circle is 56 inches, find the length of the radius and the diameter. Use the Pi Button and round your final answers to the nearest tenth.
Radius = _____
