Area and circumference

Area and circumference

Assessment

Flashcard

Mathematics

9th - 12th Grade

Practice Problem

Hard

CCSS
7.G.B.4

Standards-aligned

Created by

Wayground Content

FREE Resource

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15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where C is the circumference and 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

A = πr², where A is the area and r is the radius.

Tags

CCSS.7.G.B.4

3.

FLASHCARD QUESTION

Front

If a circle has a radius of 5 cm, what is its circumference?

Back

C = 2π(5) = 10π or about 31.4 cm.

Tags

CCSS.7.G.B.4

4.

FLASHCARD QUESTION

Front

If a circle has a radius of 7 mm, what is its area?

Back

A = π(7)² = 49π or about 153.94 mm².

Tags

CCSS.7.G.B.4

5.

FLASHCARD QUESTION

Front

What is the relationship between diameter and radius?

Back

Diameter (d) = 2 × Radius (r).

Tags

CCSS.7.G.B.4

6.

FLASHCARD QUESTION

Front

If a circle has a diameter of 20 cm, what is its radius?

Back

Radius (r) = Diameter (d) / 2 = 20 cm / 2 = 10 cm.

Tags

CCSS.7.G.B.4

7.

FLASHCARD QUESTION

Front

What is the circumference of a circle with a radius of 12.5 mm?

Back

C = 2π(12.5) = 25π or about 78.5 mm.

Tags

CCSS.7.G.B.4

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