Find the Area of a Circle from the Circumference

Interactive Video
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Mathematics
•
10th - 12th Grade
•
Hard
Wayground Content
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the circumference of the circular mirror mentioned in the problem?
15 pi inches
45 pi inches
30 pi inches
60 pi inches
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to calculate the area of a circle?
Area = 2 * pi * r
Area = pi * r^2
Area = pi * d
Area = r^2 / pi
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you find the radius from the circumference of a circle?
Divide the circumference by 2 * pi
Divide the circumference by pi
Multiply the circumference by pi
Multiply the circumference by 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the radius of the mirror if its circumference is 30 pi inches?
15 inches
10 inches
25 inches
20 inches
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the area of the mirror in terms of pi?
150 pi
200 pi
225 pi
250 pi
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