Understanding Circles: Circumference and Area
Authored by Wayground Content
Mathematics
6th - 10th Grade
CCSS covered
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate the circumference of a circle?
C = Pi * r^2
C = Pi * d
C = 2 * Pi * r
C = Pi / d
Tags
CCSS.7.G.B.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 'squaring' a number mean?
Adding it to itself
Multiplying it by 2
Multiplying it by itself
Dividing it by itself
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is squaring the radius important in finding the area of a circle?
It simplifies the calculation
It converts the radius to diameter
It results in square units, matching area's dimensionality
It gives the circle's diameter
Tags
CCSS.7.G.B.4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What mistake do students commonly make when calculating the area of a circle?
Multiplying the diameter instead of the radius
Confusing radius with diameter
Thinking r squared means 2 times r
Forgetting to use Pi
Tags
CCSS.7.G.B.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between the diameter and the radius of a circle?
Diameter is half the radius
Radius is half the diameter
Diameter is double the radius
Radius is double the diameter
Tags
CCSS.7.G.B.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert the diameter to the radius of a circle?
Multiply by 2
Divide by 2
Double it
Square it
Tags
CCSS.7.G.B.4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you find the area of a circle?
A = Pi * d^2
A = Pi * r^2
A = 2 * Pi * r
A = Pi * d
Tags
CCSS.7.G.B.4
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