Exploring Circle Area and Circumference

Exploring Circle Area and Circumference

Assessment

Flashcard

Mathematics

7th Grade

Hard

CCSS
7.G.B.4

Standards-aligned

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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

The circumference (C) of a circle is given by the formula: C = 2πr, where r is the radius.

Tags

CCSS.7.G.B.4

2.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

The area (A) of a circle is given by the formula: A = πr², where r is the radius.

Tags

CCSS.7.G.B.4

3.

FLASHCARD QUESTION

Front

If the radius of a circle is doubled, how does the area change?

Back

If the radius is doubled, the area increases by a factor of four (4).

Tags

CCSS.7.G.B.4

4.

FLASHCARD QUESTION

Front

What is the relationship between diameter and radius?

Back

The diameter (d) of a circle is twice the radius (r): d = 2r.

Tags

CCSS.7.G.B.4

5.

FLASHCARD QUESTION

Front

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

Back

To find the radius, divide the diameter by 2: r = d/2.

Tags

CCSS.7.G.B.4

6.

FLASHCARD QUESTION

Front

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

Back

C = 2π(5) = 10π cm.

Tags

CCSS.7.G.B.4

7.

FLASHCARD QUESTION

Front

What is the area of a circle with a radius of 3 inches?

Back

A = π(3)² = 9π in².

Tags

CCSS.7.G.B.4

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