If the radius of a circle is 3 m, what is the circumference?

The circumference is $$C = 2\pi r = 2\pi (3) = 6\pi \approx 18.85 m$$ .

What is the formula for the area of a circle?

The formula for the area of a circle is $$A = \pi r^2$$ .

What is the diameter of a circle with a radius of 8 inches?

The diameter is 16 inches, calculated as $$d = 2r = 2(8)$$ .

What does 'area' mean in geometry?

Area refers to the amount of space inside a shape.

How do you find the radius if you know the circumference?

To find the radius from the circumference, use the formula $$r = \frac{C}{2\pi}$$ .

What is the area of a circle with a radius of 10 ft?

The area is $$A = \pi r^2 = \pi (10)^2 = 100\pi \approx 314.16 ft^2$$ .

If the circumference of a circle is 31.4 cm, what is the radius?

The radius is 5 cm, calculated as $$r = \frac{C}{2\pi} = \frac{31.4}{2\pi}$$ .

What is the relationship between area and radius in a circle?

The area of a circle increases with the square of the radius, as shown in the formula $$A = \pi r^2$$ .

Resource Library

Math

Geometry

...

Circumference And Area Of Circles

Circumference and Area of Circles

Flashcard

•

Mathematics

•

9th - 12th Grade

•

Practice Problem

•

Hard

•

CCSS

7.G.B.4

Standards-aligned

Wayground Content

FREE Resource

Student preview

15 questions

Show all answers

FLASHCARD QUESTION

Front

What is the definition of a circle?

Back

A circle is a shape consisting of all points in a plane that are a fixed distance (radius) from a central point (center).

FLASHCARD QUESTION

Front

What is the formula for the circumference of a circle?

Back

Tags

CCSS.7.G.B.4

FLASHCARD QUESTION

Front

What is the relationship between radius and diameter?

Back

Tags

CCSS.7.G.B.4

FLASHCARD QUESTION

Front

What is the area of a circle with a radius of 5 cm?

Back

Tags

CCSS.7.G.B.4

FLASHCARD QUESTION

Front

What does the term 'circumference' refer to?

Back

Circumference refers to the distance around the circle.

FLASHCARD QUESTION

Front

How do you convert diameter to radius?

Back

Tags

CCSS.7.G.B.4

FLASHCARD QUESTION

Front

What is the area of a circle with a diameter of 12 cm?

Back

Tags

CCSS.7.G.B.4

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

15 questions

Thanksgiving Trivia Function Review

Flashcard

•

9th Grade - University

12 questions

Legal Writing Memo Flashcard

Flashcard

•

KG - University

9 questions

Special Places

Flashcard

•

KG - University

15 questions

Water Cycle

Flashcard

•

8th Grade - University

13 questions

7517 03 Basic Operations in Programming Languages

Flashcard

•

9th Grade - University

12 questions

Like to vs Would like to - course 6 (2H)

Flashcard

•

9th - 12th Grade

10 questions

Smart Online Shopper

Flashcard

•

KG - University

10 questions

Genki L3 Verbs

Flashcard

•

8th - 12th Grade

Popular Resources on Wayground

20 questions

"What is the question asking??" Grades 3-5

Quiz

•

1st - 5th Grade

20 questions

“What is the question asking??” Grades 6-8

Quiz

•

6th - 8th Grade

10 questions

Fire Safety Quiz

Quiz

•

12th Grade

20 questions

Equivalent Fractions

Quiz

•

3rd Grade

34 questions

STAAR Review 6th - 8th grade Reading Part 1

Quiz

•

6th - 8th Grade

20 questions

“What is the question asking??” English I-II

Quiz

•

9th - 12th Grade

20 questions

Main Idea and Details

Quiz

•

5th Grade

47 questions

8th Grade Reading STAAR Ultimate Review!

Quiz

•

8th Grade

Discover more resources for Mathematics

20 questions

Graphing Inequalities on a Number Line

Quiz

•

6th - 9th Grade

46 questions

Linear and Exponential Function Key Features

Quiz

•

9th Grade

18 questions

CHS PSAT Prep

Quiz

•

9th Grade

21 questions

Factoring Trinomials (a=1)

Quiz

•

9th Grade

15 questions

Combine Like Terms and Distributive Property

Quiz

•

8th - 9th Grade

44 questions

Vocabulary Algebra I

Quiz

•

9th Grade

20 questions

Function or Not a Function

Quiz

•

8th - 9th Grade

18 questions

Linear vs Exponential Functions

Quiz

•

9th Grade