Circles and Pi
Authored by Anthony Clark
Mathematics
7th Grade
CCSS covered
Used 4+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the diameter of a circle is 9cm, we can ESTIMATE that the circumference will be a little more than:
27cm
3cm
Answer explanation
The question asks for an estimate of the circumference of a circle with a diameter of 9cm. The formula to calculate the circumference of a circle is π*diameter. Assuming π as 3 (for simplicity), the estimated circumference will be 3*9=27cm. Therefore, the correct choice is a little more than 27cm.
Tags
CCSS.7.G.B.4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the circumference of a circle is 9cm, we can estimate that the diameter will be about:
3cm
27cm
Answer explanation
The question asks for the approximate diameter of a circle given its circumference is 9cm. The formula to find the diameter is: Diameter = Circumference/π. Using an estimation of 3 for π, we get a diameter of approximately 3cm. Thus, the correct answer is 3cm.
Tags
CCSS.7.G.B.4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The radius is what of the diameter
twice
half
equal
undetermined
Tags
CCSS.7.G.B.4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the diameter of a circle is 15, the radius is
30
7.5
15
20
Tags
CCSS.7.G.B.4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the radius of a circle is 10, what is the diameter?
10
5
20
15
Tags
CCSS.7.G.B.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is not part of a circle?
diameter
radius
pi
angle
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
the ratio of a circles circumference to its diameter
area
circumference
pi
radius
Tags
CCSS.7.G.B.4
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