Back to Details Practice: Understand and apply the formulas for area and circumference of a circle. (NC.7.G.4) Open in Editor

Practice: Understand and apply the formulas for area and circumference of a circle. (NC.7.G.4)

Targeted remediation practice

            📚 Mathematics
                            🎓 Grade 7
                                        ⏱️ 25 minutes
                    

Learning Objectives

Understand and apply the formulas for area and circumference of a circle.

            Progress
            4 sections
        

1
Practice set 1

Question 1

A circle has radius 12. What is its circumference? (Use $C = 2\pi r$ .)

$48\pi$
$144\pi$
$24\pi$
$12\pi$

Question 2

A circle has radius 10. What is its area? (Use $A = \pi r^2$ .)

$10\pi$
$100\pi$
$400\pi$
$20\pi$

Question 3

A circle has radius 4. What is its circumference? (Use $C = 2\pi r$ .)

$9\pi$
$4\pi$
$16\pi$
$8\pi$

Question 4

A circle has radius 8. What is its area? (Use $A = \pi r^2$ .)

$64\pi$
$256\pi$
$8\pi$
$16\pi$

Question 5

A circle has radius 8. What is its circumference? (Use $C = 2\pi r$ .)

$64\pi$
$16\pi$
$8\pi$
$32\pi$

2
Practice set 2

Question 6

A circle has radius 4. What is its area? (Use $A = \pi r^2$ .)

$16\pi$
$4\pi$
$64\pi$
$8\pi$

Question 7

A circle has radius 12. What is its circumference? (Use $C = 2\pi r$ .)

$12\pi$
$48\pi$
$24\pi$
$144\pi$

Question 8

A circle has radius 10. What is its area? (Use $A = \pi r^2$ .)

$100\pi$
$20\pi$
$10\pi$
$400\pi$

Question 9

A circle has radius 2. What is its circumference? (Use $C = 2\pi r$ .)

$8\pi$
$4\pi$
$2\pi$
$5\pi$

Question 10

A circle has radius 7. What is its area? (Use $A = \pi r^2$ .)

$7\pi$
$49\pi$
$196\pi$
$14\pi$

3
Practice set 3

Question 11

A circle has radius 12. What is its circumference? (Use $C = 2\pi r$ .)

$12\pi$
$144\pi$
$48\pi$
$24\pi$

Question 12

A circle has radius 10. What is its area? (Use $A = \pi r^2$ .)

$100\pi$
$400\pi$
$20\pi$
$10\pi$

Question 13

A circle has radius 12. What is its circumference? (Use $C = 2\pi r$ .)

$12\pi$
$144\pi$
$24\pi$
$48\pi$

Question 14

A circle has radius 6. What is its area? (Use $A = \pi r^2$ .)

$6\pi$
$144\pi$
$36\pi$
$12\pi$

Question 15

A circle has radius 4. What is its circumference? (Use $C = 2\pi r$ .)

$16\pi$
$9\pi$
$8\pi$
$4\pi$

4
Practice set 4

Question 16

A circle has radius 2. What is its area? (Use $A = \pi r^2$ .)

$16\pi$
$2\pi$
$4\pi$
$5\pi$

Question 17

A circle has radius 6. What is its circumference? (Use $C = 2\pi r$ .)

$24\pi$
$36\pi$
$12\pi$
$6\pi$

Question 18

A circle has radius 3. What is its area? (Use $A = \pi r^2$ .)

$36\pi$
$3\pi$
$6\pi$
$9\pi$

Question 19

A circle has radius 9. What is its circumference? (Use $C = 2\pi r$ .)

$18\pi$
$36\pi$
$81\pi$
$9\pi$

Question 20

A circle has radius 8. What is its area? (Use $A = \pi r^2$ .)

$8\pi$
$16\pi$
$64\pi$
$256\pi$

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