Proportionality of Circles
Authored by Anthony Clark
Mathematics
7th Grade
CCSS covered
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18 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Does there appear to be a proportional relationship between the radius and circumference of a circle? Explain your reasoning.
Yes, the points line up on a straight line that leads back to the origin.
Yes, there is a Constant of Proportionality.
No, the points line up on a straight line, but do not include the origin.
No, there isn't a Constant of Proportionality.
Tags
CCSS.7.RP.A.2D
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Select all of the true statements.
Tags
CCSS.7.G.B.4
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A groundskeeper needs grass seed to cover a circular field, 290 feet in diameter.
A Store sells 50-pound bags of grass seed that covers about 20,000 square feet of field.
What is the least number of WHOLE bags the groundskeeper must buy to cover the circular field?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the constant of proportionality between the circumference and the diameter?
π, or 3.14
It depends on the measurements.
They are not proportional.
2π, or 6.28
Answer explanation
When we divide the circumference by the diameter, we always get π.
Tags
CCSS.7.RP.A.2B
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which shows the ratio for pi?
circumference to diameter
radius to circumference
area to diameter
area to radius
Tags
CCSS.7.G.B.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The ratio of the radii of two circles is 4:9. What is the ratio of their circumferences?
2:3
4:9
16:81
Tags
CCSS.7.G.B.4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The ratio of the circumference of a circle to the diameter
distance
pi
radii
diameter
Tags
CCSS.7.G.B.4
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