## katlin95 2 years ago use the illustration below to calculate the circumfrence of the circle. A. 75.4 cm B. 24 cm C. 37.7 cm D. 452.4 cm

1. katlin95

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2. Hope_nicole

what is the equation for circumference?

3. katlin95

their is no equation

4. some_someone

The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.

5. some_someone

If a circle has a diameter of 4, its circumference is 3.14*4=12.56

6. some_someone

If you know the radius, the diameter is twice as large.

7. some_someone

You have enough info @katlin95 to work it out on your own for once :)

8. katlin95

its B

9. katlin95

is that the right answer guys?

10. some_someone

Circumference = 2 • π • radius = π • diameter Circle Area = π • r² = ¼ • π • d²

11. katlin95

yea its B

12. katlin95

nevermind its C

13. some_someone

A. 75.4 cm

14. MsSmiley123

A

15. some_someone

they give you 12 cm aka the RADIUS!

16. some_someone

Circumference = 2 • π • radius = 2 • π • 12 = 75.39 = 75.4