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Circumference & Area of Circles

Circumference & Area of Circles

Assessment

Flashcard

Mathematics

6th - 8th Grade

Practice Problem

Hard

CCSS
7.G.B.4, HSG.GMD.A.1, HSG.C.B.5

Standards-aligned

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the formula for the circumference of a circle?

Back

C = 2πr or C = πd, where r is the radius and d is the diameter.

Tags

CCSS.7.G.B.4

2.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

A = πr², where r is the radius.

Tags

CCSS.7.G.B.4

3.

FLASHCARD QUESTION

Front

Define a chord in a circle.

Back

A chord is a line segment with both endpoints on the circle.

4.

FLASHCARD QUESTION

Front

What is the difference between the diameter and the radius of a circle?

Back

The diameter is twice the length of the radius; d = 2r.

Tags

CCSS.7.G.B.4

5.

FLASHCARD QUESTION

Front

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

Back

r = C / (2π).

Tags

CCSS.7.G.B.4

6.

FLASHCARD QUESTION

Front

How do you calculate the radius if you know the area?

Back

r = √(A/π).

Tags

CCSS.7.G.B.4

7.

FLASHCARD QUESTION

Front

What is the relationship between the radius and the diameter?

Back

The diameter is equal to twice the radius (d = 2r).

Tags

CCSS.7.G.B.4

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