Circles and Pi

Circles and Pi

7th Grade

20 Qs

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Circles and Pi

Circles and Pi

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

CCSS
7.G.B.4, HSG.GMD.A.1

Standards-aligned

Created by

Anthony Clark

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Calculate the circumference of a circle with a radius of 8 units. (Use π = 3.14)

25.12

64.32

50.24

40.48

Answer explanation

The question asks to calculate the circumference of a circle with a radius of 8 units using π = 3.14. The formula for the circumference is C = 2πr. Substituting the given values, we get C = 2 * 3.14 * 8, which equals 50.24. So, the correct option is 50.24.

Tags

CCSS.7.G.B.4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the formula to calculate the circumference of a circle?

2 * radius

pi * radius

radius * radius

2 * pi * radius

Answer explanation

The question asks for the formula to calculate the circumference of a circle. The correct formula is '2 * pi * radius'. In this formula, '2' is the multiplier, 'pi' is a constant approximately equal to 3.14, and 'radius' is the distance from the center of the circle to its edge. Therefore, to find the circumference, you multiply twice the value of pi by the radius.

Tags

CCSS.7.G.B.4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the radius of a circle if its diameter is 10 units?

5

7

2.5

12

Answer explanation

The question asks for the radius of a circle given that its diameter is 10 units. In circle geometry, the radius is exactly half of the diameter. Therefore, if the diameter is 10 units, then the radius would be 5 units. Hence, the correct answer is 5.

Tags

CCSS.7.G.B.4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How is Pi defined?

The ratio of the diameter of a circle to its circumference

The ratio of the circumference of a circle to its diameter

The ratio of the radius of a circle to its circumference

The ratio of the circumference of a circle to its radius

Tags

CCSS.HSG.GMD.A.1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the definition of pi?

The ratio of a circle's circumference to its diameter

The ratio of a circle's radius to its diameter

The ratio of a circle's area to its diameter

The ratio of a circle's circumference to its are

Tags

CCSS.7.G.B.4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What digits do we use for Pi?

3.14

31.4

314

Tags

CCSS.HSG.GMD.A.1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What number is pi?

41

00

3.14

5.14

Tags

CCSS.HSG.GMD.A.1

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