Pi and Circles
Authored by Anthony Clark
Mathematics
7th Grade
CCSS covered
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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A diameter must pass through the center of a circle.
True
False
Answer explanation
A diameter is a straight line segment that passes through the center of a circle and connects two points on the circle's circumference. Therefore, it is true that a diameter must pass through the center of a circle.
2.
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
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tags
CCSS.7.G.B.4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tags
CCSS.7.G.B.4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tags
CCSS.7.G.B.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The large circle has radius 9 cm.
The small circle has radius 4 cm.
Find the area of the blue region.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the radius of this circle?
10
20
5
100
Tags
CCSS.7.G.B.4
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