
Exploring the Circumference of a Circle

Interactive Video
•
Mathematics
•
6th - 8th Grade
•
Hard
Standards-aligned

Lucas Foster
FREE Resource
Standards-aligned
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step to find the circumference if the area of the circle is known?
Calculate the diameter
Find the radius using the area formula
Multiply the area by pi
Divide the area by pi
Tags
CCSS.7.G.B.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What formula is used to calculate the area of a circle?
Circumference = pi * diameter
Area = 2 * pi * radius
Area = pi * radius squared
Circumference = 2 * pi * radius
Tags
CCSS.7.G.B.4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After dividing the area equation by pi, what equation do we get?
diameter squared = 36
radius squared = 36
radius = 36
diameter = 36
Tags
CCSS.7.G.B.4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of the radius derived from the area?
Radius = 8
Radius = 7
Radius = 6
Radius = 5
Tags
CCSS.7.G.B.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do we confirm the radius value when solving the equation r squared = 36?
By taking the negative square root
By taking the positive square root
By dividing by pi
By multiplying by pi
Tags
CCSS.8.EE.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What formula is used to find the circumference of a circle?
Circumference = 2 * pi * diameter
Circumference = pi * radius
Circumference = 2 * pi * radius
Circumference = pi * diameter
Tags
CCSS.7.G.B.4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the radius of the circle is 6, what is the circumference?
6pi
24pi
12pi
18pi
Tags
CCSS.7.G.B.4
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step in determining the circumference after finding the radius?
Divide the radius by 2 and then multiply by pi
Subtract pi from the radius and multiply by 2
Add pi to the radius and multiply by 2
Multiply the radius by 2 and then by pi
Tags
CCSS.7.G.B.4
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